C0961 Diagnostic Trouble Code

C0961 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 C0961 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code C0961 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 C0961.

Fortunately, C0961 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0961 Trouble Code For Specific Cars

C0961 Rover 400 Ignition Coil A Secondary Circuit Malfunction
C0961 Nissan Pulsar Crankshaft Position Camshaft Position Correlation (Bank 2 Sensor A)
C0961 Dodge Lancer Ignition Key-In Circuit Failure
C0961 Maserati Karif Transmission Fluid Pressure Sensor/Switch E Circuit High
C0961 Nissan Teana Cylinder #1 High To Low Side Open
C0961 Buick 80 Cylinder 4 Misfire Detected
C0961 Ruston-hornsby A Ignition Run Circuit Short To Battery