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:

Engine surge
Blown fuse (if applicable)
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

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.

C0299 Trouble Code For Specific Cars

C0299 Renault R5 Heated Wind Shield Relay Short to Vbatt (changed from Failure 2/6/97)
C0299 Nissan Tiida Cylinder #2 High To Low Side Short
C0299 Porsche 908 Front Wiper Select Switch "C" Short to Ground
C0299 Nissan E20 Clutch Pedal Switch A Circuit Low
C0299 Triumph Gloria Passenger's Seatback Autoglide Rearward Switch Circuit Short to Ground
C0299 Toyota Camry O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
C0299 Seat Cordoba Injector Circuit Open / Shorted - Cylinder #4