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Sobre p0299 y chevrolet (GM)
Reprogramacion centralita
The P0299 code is set when the measured MAP pressure is more than 39 kPa below the expected range for 10 seconds.
Possible symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P0299 Chevrolet Description
The Manifold Absolute Pressure ( MAP) sensor measures the pressure inside the intake manifold. The pressure in the intake manifold is affected by turbocharging output, engine speed, accelerator pedal input, ambient air temperature, and Barometric Pressure (BARO). A diaphragm within the MAP pressure sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. Under normal operation, then the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operated at idle or when the ignition is ON while the engine is OFF. The highest manifold pressure occurs when the turbocharger output is high. The manifold pressure range from 58 kPa (8 psi) when pressure are low to more than 296 kPa(42.7 psi) when pressures are high, depending on the BARO.
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P0299 Turbocharger/Supercharger A Underboost Condition OBD-II Trouble Code Technical Description Turbocharger/Supercharger A Underboost Condition What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles that have a turbocharger or supercharger. Brands of vehicles affected may include but are not limited to Ford, GMC, Chevy, VW, Audi, Dodge, Hyundai, BMW, Mercedes-Benz, Ram, Fiat, etc. Although generic, the specific repair steps may vary depending on make/model. The P0299 DTC code refers to a condition where the PCM/ECM (powertrain/engine control module) has detected that the bank "A" or single turbocharger or supercharger is not providing a normal amount of boost (pressure). That could be due to a variety of reasons, which we detail below. On a normally operating turbocharged or supercharged engine the air going into the engine is pressurized and that's part of what makes so much power for an engine of it's size. If this code is set, you will likely notice reduced power output. Turbochargers are driven from the exhaust exiting the engine to use a turbine to force air into the intake. Superchargers are mounted on the intake side of the engine and are typically belt driven to force more air into the intake, with no connection to the exhaust. In the case of Ford vehicles, this may apply: "The PCM checks for a minimum throttle intake pressure (TIP) PID reading during engine operation, which indicates an underboost condition. This DTC sets when the PCM detects that the actual throttle intake pressure is less than the desired throttle intake pressure by 4 psi or more for 5 seconds." In the case of VW & Audi vehicles, the code definition is slightly different, it is "Boost Pressure Regulation: Control Range Not Reached." As you can probably tell that's basically just another way of stating an underboost condition. A typical turbocharger and related components: Severity The severity of this code can vary from moderate to severe. If you delay repair of this issue, you can potentially experience more extensive and costly damage. Symptoms Symptoms of a P0299 DTC may include: MIL (Malfunction indicator lamp) illumination Reduced power output from engine, possibly in a "limp" mode Unusual sounds from the engine/turbo There would likely be no other symptoms. Potential Causes Potential causes of a P0299 turbo underboost code include: Intake (induction) air restriction or leak Failed or damaged turbocharger (sticking, binding, etc.) Faulty boost/charge pressure sensor Faulty wastegate bypass regulator valve (VW) Low fuel pressure condition (Isuzu) Sticking turbo nozzle control solenoid (Isuzu) Faulty injector control pressure (ICP) sensor (Ford) Low oil pressure (Ford) EGR system fault (Ford) Variable geometry turbocharger (VGT) actuator (Ford) VGT vanes sticking (Ford) Possible P0299 Solutions First off, you'll want to repair any other DTC codes if present prior to diagnosing this code. You will next want to search for Technical Service Bulletins (TSBs) that may apply to your year/make/model/engine configuration. TSBs are bulletins put out by the auto manufacturer to provide information on known issues, commonly surround specific trouble codes like this. If there is a known TSB you should start with that diagnosis as it can save you time and money. Start with a visual inspection. Inspect the intake air system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as required. Check the turbocharger wastegate regulating valve solenoid for correct operation. If the air induction system tests OK, then you'll want to focus your diagnosis efforts on the charge pressure control, diverter valve (blowoff valve), sensors, regulators, etc. Really at this point you'll want to refer to a vehicle specific detailed repair manual for specific troubleshooting steps. There are some known issues on certain makes and engines so also check out our car repair forums here and search using your keywords. For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation. Anecdotally in Fords, this seems to be found in EcoBoost or Powerstroke engine equipped vehicles such as F150, Explorer, Edge, F250/F350, and Escape. Regarding VW & Audi models, that may include A4, Tiguan, Golf, A5, Passat, GTI, Q5, and others. When it comes to Chevy and GMC it's mainly seen on the Cruze, Sonic, and Duramax equipped vehicles. The information in this article is slightly generic in the fact that each model may have it's own known fix for this code. Good luck with your repair! If you need help,
Read more at: [Tienes que estar registrado y conectado para ver este vínculo]
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Diagnostic Trouble Code (DTC) P0234, P0299
DTC Description
Note : The symptom byte may not be displayed on a scan tool.
DTC P0234 (00): Turbocharger Engine Overboost
DTC P0299 (00): Turbocharger Engine Underboost
Circuit/System Description
The boost pressure sensor measures the pressure inside the intake manifold. Pressure in the intake manifold is affected by turbocharger output, engine speed, accelerator pedal input, air temperature, and barometric pressure (BARO). A diaphragm within the boost pressure sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. The sensor translates this action into electrical resistance. The boost pressure sensor wiring includes 3 circuits. The engine control module (ECM) supplies a regulated 5 volts to the sensor on a 5-volt reference circuit. The ECM supplies a ground on a low reference circuit. The boost pressure sensor provides a signal voltage to the ECM, relative to pressure, on the boost pressure sensor signal circuit. The ECM converts the signal voltage input to a pressure value. Under normal operation, the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operated at idle or when the ignition is ON while the engine is OFF. The highest manifold pressures occur when the turbocharger output is high.
Conditions for Running the DTC
Ignition switch is ON
Conditions for Setting the DTC
P0234(00)
ECM detects that the actual boost pressure goes below the deviation limit of the desired boost pressure
P0299(00)
ECM detects that the actual boost pressure goes above the deviation limit of the desired boost pressure
Action Taken When the DTC Sets
DTC P0234 and P0299 are type E DTCs.
Refer to “Diagnostic Trouble Code (DTC) Type Definitions”
Conditions for Clearing the MIL/DTC
DTC P0234 and P0299 are type E DTCs.
Refer to “Diagnostic Trouble Code (DTC) Type Definitions”
Diagnostic Aids
For an intermittent fault condition, refer to "Intermittent Conditions".
Inspect the boost pressure sensor for an incorrectly routed harness or if the harness is too close to the following:
solenoids,
relays, and
motors.
Since fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic procedure for shorted terminals or poor wiring connection before replacing any component.
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa and the BARO parameters. The boost pressure and BARO should be within 1-10 kPa of each other.
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa parameter while slowly increasing the engine speed from idle to 3,000 RPM, then slowly return the engine speed to idle. The boost pressure parameter should remain near or equal BARO at idle speed and increase smoothly as engine speed is increased, then return to BARO when the engine speed is returned to idle.
DTC P0234, P0299
Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check?
-
Go to Step 2
Go to "Diagnostic System Check"
2
Observe the Diagnostic Trouble Code (DTC) information with a scan tool.
Does the scan tool indicate any other DTCs are also set?
-
Go to applicable DTC table
Go to Step 3
3
Observe the Freeze Frame/Failure Records for this DTC.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 4
Go to "Intermittent Conditions"
4
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa parameter while slowly increasing the engine speed from idle to 3,000 RPM, then slowly return the engine to idle.
Does the boost pressure remain near or equal BARO at idle speed and increase smoothly as engine speed is increased, then return to BARO when the engine speed is returned to idle?
-
Go to Step 7
Go to Step 5
5
Inspect the charge air cooler for the followings:
Any damaged components
Loose or improper installation
Wet or restricted air filter
Exhaust leaks before the turbocharger
Exhaust restrictions after the turbocharger
Leaks in the charge air cooler
Did you find and correct the condition?
-
Go to Step 8
Go to Step 6
6
Inspect the turbocharger for the followings:
Debris
Damage
Sticking turbocharger vanes
Turbocharger oil supply feed
Did you find and correct the condition?
-
Go to Step 8
Go to Step 7
7
Replace the boost pressure sensor.
Did you complete the replacement?
-
Go to Step 8
-
8
Clear the DTCs with the scan tool.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 9
9
Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?
-
Go to applicable DTC table
System OK
Sobre p0299 y chevrolet (GM)
Reprogramacion centralita
The P0299 code is set when the measured MAP pressure is more than 39 kPa below the expected range for 10 seconds.
Possible symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P0299 Chevrolet Description
The Manifold Absolute Pressure ( MAP) sensor measures the pressure inside the intake manifold. The pressure in the intake manifold is affected by turbocharging output, engine speed, accelerator pedal input, ambient air temperature, and Barometric Pressure (BARO). A diaphragm within the MAP pressure sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. Under normal operation, then the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operated at idle or when the ignition is ON while the engine is OFF. The highest manifold pressure occurs when the turbocharger output is high. The manifold pressure range from 58 kPa (8 psi) when pressure are low to more than 296 kPa(42.7 psi) when pressures are high, depending on the BARO.
-----------------------------------------------------------
P0299 Turbocharger/Supercharger A Underboost Condition OBD-II Trouble Code Technical Description Turbocharger/Supercharger A Underboost Condition What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles that have a turbocharger or supercharger. Brands of vehicles affected may include but are not limited to Ford, GMC, Chevy, VW, Audi, Dodge, Hyundai, BMW, Mercedes-Benz, Ram, Fiat, etc. Although generic, the specific repair steps may vary depending on make/model. The P0299 DTC code refers to a condition where the PCM/ECM (powertrain/engine control module) has detected that the bank "A" or single turbocharger or supercharger is not providing a normal amount of boost (pressure). That could be due to a variety of reasons, which we detail below. On a normally operating turbocharged or supercharged engine the air going into the engine is pressurized and that's part of what makes so much power for an engine of it's size. If this code is set, you will likely notice reduced power output. Turbochargers are driven from the exhaust exiting the engine to use a turbine to force air into the intake. Superchargers are mounted on the intake side of the engine and are typically belt driven to force more air into the intake, with no connection to the exhaust. In the case of Ford vehicles, this may apply: "The PCM checks for a minimum throttle intake pressure (TIP) PID reading during engine operation, which indicates an underboost condition. This DTC sets when the PCM detects that the actual throttle intake pressure is less than the desired throttle intake pressure by 4 psi or more for 5 seconds." In the case of VW & Audi vehicles, the code definition is slightly different, it is "Boost Pressure Regulation: Control Range Not Reached." As you can probably tell that's basically just another way of stating an underboost condition. A typical turbocharger and related components: Severity The severity of this code can vary from moderate to severe. If you delay repair of this issue, you can potentially experience more extensive and costly damage. Symptoms Symptoms of a P0299 DTC may include: MIL (Malfunction indicator lamp) illumination Reduced power output from engine, possibly in a "limp" mode Unusual sounds from the engine/turbo There would likely be no other symptoms. Potential Causes Potential causes of a P0299 turbo underboost code include: Intake (induction) air restriction or leak Failed or damaged turbocharger (sticking, binding, etc.) Faulty boost/charge pressure sensor Faulty wastegate bypass regulator valve (VW) Low fuel pressure condition (Isuzu) Sticking turbo nozzle control solenoid (Isuzu) Faulty injector control pressure (ICP) sensor (Ford) Low oil pressure (Ford) EGR system fault (Ford) Variable geometry turbocharger (VGT) actuator (Ford) VGT vanes sticking (Ford) Possible P0299 Solutions First off, you'll want to repair any other DTC codes if present prior to diagnosing this code. You will next want to search for Technical Service Bulletins (TSBs) that may apply to your year/make/model/engine configuration. TSBs are bulletins put out by the auto manufacturer to provide information on known issues, commonly surround specific trouble codes like this. If there is a known TSB you should start with that diagnosis as it can save you time and money. Start with a visual inspection. Inspect the intake air system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as required. Check the turbocharger wastegate regulating valve solenoid for correct operation. If the air induction system tests OK, then you'll want to focus your diagnosis efforts on the charge pressure control, diverter valve (blowoff valve), sensors, regulators, etc. Really at this point you'll want to refer to a vehicle specific detailed repair manual for specific troubleshooting steps. There are some known issues on certain makes and engines so also check out our car repair forums here and search using your keywords. For example, if you search around, you'll find that a common fix for a P0299 in VWs is to replace or repair the diverter valve or wastegate solenoid. On the GM Duramax diesel, this code may mean the turbo housing resonator has failed. If you have a Ford, you'll want to next check the wastegate regulating valve solenoid for correct operation. Anecdotally in Fords, this seems to be found in EcoBoost or Powerstroke engine equipped vehicles such as F150, Explorer, Edge, F250/F350, and Escape. Regarding VW & Audi models, that may include A4, Tiguan, Golf, A5, Passat, GTI, Q5, and others. When it comes to Chevy and GMC it's mainly seen on the Cruze, Sonic, and Duramax equipped vehicles. The information in this article is slightly generic in the fact that each model may have it's own known fix for this code. Good luck with your repair! If you need help,
Read more at: [Tienes que estar registrado y conectado para ver este vínculo]
------------------------------------
Diagnostic Trouble Code (DTC) P0234, P0299
DTC Description
Note : The symptom byte may not be displayed on a scan tool.
DTC P0234 (00): Turbocharger Engine Overboost
DTC P0299 (00): Turbocharger Engine Underboost
Circuit/System Description
The boost pressure sensor measures the pressure inside the intake manifold. Pressure in the intake manifold is affected by turbocharger output, engine speed, accelerator pedal input, air temperature, and barometric pressure (BARO). A diaphragm within the boost pressure sensor is displaced by the pressure changes that occur from the varying load and operating conditions of the engine. The sensor translates this action into electrical resistance. The boost pressure sensor wiring includes 3 circuits. The engine control module (ECM) supplies a regulated 5 volts to the sensor on a 5-volt reference circuit. The ECM supplies a ground on a low reference circuit. The boost pressure sensor provides a signal voltage to the ECM, relative to pressure, on the boost pressure sensor signal circuit. The ECM converts the signal voltage input to a pressure value. Under normal operation, the lowest pressure that can exist in the intake manifold is equal to the BARO. This occurs when the vehicle is operated at idle or when the ignition is ON while the engine is OFF. The highest manifold pressures occur when the turbocharger output is high.
Conditions for Running the DTC
Ignition switch is ON
Conditions for Setting the DTC
P0234(00)
ECM detects that the actual boost pressure goes below the deviation limit of the desired boost pressure
P0299(00)
ECM detects that the actual boost pressure goes above the deviation limit of the desired boost pressure
Action Taken When the DTC Sets
DTC P0234 and P0299 are type E DTCs.
Refer to “Diagnostic Trouble Code (DTC) Type Definitions”
Conditions for Clearing the MIL/DTC
DTC P0234 and P0299 are type E DTCs.
Refer to “Diagnostic Trouble Code (DTC) Type Definitions”
Diagnostic Aids
For an intermittent fault condition, refer to "Intermittent Conditions".
Inspect the boost pressure sensor for an incorrectly routed harness or if the harness is too close to the following:
solenoids,
relays, and
motors.
Since fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic procedure for shorted terminals or poor wiring connection before replacing any component.
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa and the BARO parameters. The boost pressure and BARO should be within 1-10 kPa of each other.
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa parameter while slowly increasing the engine speed from idle to 3,000 RPM, then slowly return the engine speed to idle. The boost pressure parameter should remain near or equal BARO at idle speed and increase smoothly as engine speed is increased, then return to BARO when the engine speed is returned to idle.
DTC P0234, P0299
Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check?
-
Go to Step 2
Go to "Diagnostic System Check"
2
Observe the Diagnostic Trouble Code (DTC) information with a scan tool.
Does the scan tool indicate any other DTCs are also set?
-
Go to applicable DTC table
Go to Step 3
3
Observe the Freeze Frame/Failure Records for this DTC.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 4
Go to "Intermittent Conditions"
4
Using a scan tool and with the engine at idle, observe the boost pressure sensor kPa parameter while slowly increasing the engine speed from idle to 3,000 RPM, then slowly return the engine to idle.
Does the boost pressure remain near or equal BARO at idle speed and increase smoothly as engine speed is increased, then return to BARO when the engine speed is returned to idle?
-
Go to Step 7
Go to Step 5
5
Inspect the charge air cooler for the followings:
Any damaged components
Loose or improper installation
Wet or restricted air filter
Exhaust leaks before the turbocharger
Exhaust restrictions after the turbocharger
Leaks in the charge air cooler
Did you find and correct the condition?
-
Go to Step 8
Go to Step 6
6
Inspect the turbocharger for the followings:
Debris
Damage
Sticking turbocharger vanes
Turbocharger oil supply feed
Did you find and correct the condition?
-
Go to Step 8
Go to Step 7
7
Replace the boost pressure sensor.
Did you complete the replacement?
-
Go to Step 8
-
8
Clear the DTCs with the scan tool.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
-
Go to Step 2
Go to Step 9
9
Check if any additional DTCs are set.
Are there any DTCs that have not been diagnosed?
-
Go to applicable DTC table
System OK
