P02CB Turbocharger / Supercharger B Underboost Condition

P02CB Turbocharger / Supercharger B Underboost Condition

OBD-II DTC Datasheet

Turbocharger / Supercharger Low Boost Condition B

What does this mean?

This Diagnostic Trouble Code (DTC) is a generic transmission code, which means it applies to OBD-II vehicles that have a turbocharger or supercharger. Affected vehicle brands may include, but are not limited to, Ford, GMC, Chevy, VW, Audi, Dodge, Hyundai, BMW, Mercedes-Benz, Ram, etc. Although generic, specific repair steps may vary depending on from brand / model.

DTC P0299 refers to a condition in which the PCM / ECM (Powertrain / Engine Control Module) detects that Turbocharger "B" or the supercharger is not delivering normal boost.

Consult your specific vehicle repair manual to determine which turbo or Type B supercharger is used for your particular application. This can be due to a variety of reasons, which we will discuss in detail below. In a normally operating turbocharged or supercharged engine, the air entering the engine is pressurized, which is part of what provides so much power for an engine of this size. If this code is set, you will probably notice a decrease in power output.

In the case of Ford vehicles, this may apply: “The PCM checks the Throttle Inlet Minimum Pressure (TIP) PID reading while the engine is running, which indicates a low pressure condition. This DTC sets when the PCM detects that the actual throttle inlet pressure is less than the desired throttle inlet pressure by 4 psi or more for 5 seconds. "

symptoms

Symptoms of a P02CB trouble code may include:

• MIL Illumination (Malfunction Indicator Lamp)
• Reduced engine power, possibly in emergency mode.
• Unusual engine / turbo sounds

Most likely, there will be no other symptoms.

Possible reasons

Possible causes of Turbocharger Insufficient Acceleration Code P02CB include:

• Restriction or leakage of intake (intake) air
• Defective or damaged turbocharger (seized, seized, etc.)
• Faulty boost / boost pressure sensor
• Wastegate bypass control valve (VW) defective
• Low fuel pressure condition (Isuzu)
• Stuck injector control solenoid (Isuzu)
• Defective injector control pressure sensor (ICP) (Ford)
• Low oil pressure (Ford)
• Exhaust Gas Recirculation Malfunction (Ford)
• Variable Geometry Turbocharger (VGT) Actuator (Ford)
• VGT blade sticking (Ford)

Possible Solutions P02CB

First, you will want to correct any other DTCs, if any, before diagnosing the code.

Let's start with a visual inspection. Inspect the air intake system for cracks, loose or disconnected hoses, restrictions, blockages, etc. Repair or replace as necessary.

If the air intake system passes the test normally, then you'll want to focus your diagnostic efforts on the boost pressure control, switch valve (blow off valve), sensors, regulators, etc. You'll actually want to address the vehicle at this point. specific detailed repair guide for specific troubleshooting steps. There are some known issues with some makes and engines, so also visit our auto repair forums here and search using your keywords. For example, if you look around you will find that the usual solution for a P0299 in a VW is to replace or repair the changeover valve or wastegate solenoid. On a GM Duramax diesel engine, this code may indicate that the turbocharger housing resonator has failed. If you have a Ford, you will need to test the wastegate control valve solenoid for proper operation.

Related DTC discussions

• There are currently no related topics in our forums. Post a new topic on the forum now.

Need more help with the P02CB code?

If you still need help with DTC P02CB, post a question in the comments below this article.

NOTE. This information is provided for informational purposes only. It is not intended to be used as a repair recommendation and we are not responsible for any action you take on any vehicle. All information on this site is protected by copyright.