C2992 Diagnostic Trouble Code

C2992 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 C2992 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code C2992 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 C2992.

Fortunately, C2992 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2992 Trouble Code For Specific Cars

C2992 Datsun 2300 High Mount Stop Lamp Circuit Failure
C2992 Renault 18 Gear 3 Incorrect ratio
C2992 Oldsmobile 98 Cylinder 5 Misfire Detected
C2992 Avanti Avanti Aux Heater Glow Plug Circuit Short to Ground
C2992 Bugatti Eb118 Cylinder #5 High To Low Side Open
C2992 Triumph Bonneville 1200 Passenger's Seat Forward Switch Circuit Short to Battery
C2992 Triumph Stag Pedal Correlation PDS1 and HPDS