C2776 Diagnostic Trouble Code

C2776 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 C2776 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code C2776 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 C2776.

Fortunately, C2776 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2776 Trouble Code For Specific Cars

C2776 Toyota Platz PAD Warning Lamp Inoperative
C2776 Proton Inspira Fuel Shut Off Solenoid Malfunction
C2776 Albion 15 ABS Outlet Valve Coil Rear Circuit Open
C2776 Napier 8 CAN Communication Bus Fault
C2776 Subaru Svx Longitudinal Acceleration Threshold Exceeded
C2776 Kia Venga Servo Motor Coolair Bypass Circuit Failure
C2776 Princess 2000 Fuel Rail Sensor In-Range Low Failure