C0176 Diagnostic Trouble Code

C0176 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 C0176 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Dirty air cleaner element Damaged DPF

Repair Processes :

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. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code C0176 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 C0176.

Fortunately, C0176 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0176 Trouble Code For Specific Cars

C0176 Cadillac 50 Damper LR Circuit Short to Ground
C0176 Lancia Gamma Speed Wheel Sensor RF Circuit Open
C0176 Volvo 220
C0176 Berkeley B Booster Pedal Force switch circuit Failure
C0176 Humber 14 Right Power Sliding Door Open/Close Output Circuit Short to Battery
C0176 Austin Montego Aux A/C Blower Speed 1 Circuit Short to Ground
C0176 Chrysler Howler Evaporative Emission Control System leak Detected (small leak)