C0299 Diagnostic Trouble Code


C0299 is a kind of OBD-II Diagnostic C-Chassis Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a C0299 diagnostic trouble code may include:
  • If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
  • Corroded or damaged connector
  • Reduction in engine performance, especially at low RPM levels
  • Hesitation upon acceleration
Place of C0299 in engine

Possible Causes :

  • A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
  • Dirty air cleaner element Damaged DPF
  • Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code C0299 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before C0299.

Fortunately, C0299 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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