C011A Diagnostic Trouble Code

C011A 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 C011A diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code C011A 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 C011A.

Fortunately, C011A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C011A Trouble Code For Specific Cars

C011A Italdesign Aspid SCP (J1850) Invalid or Missing Data for Wheels
C011A Samsung Sm7 Illuminated Entry Relay Circuit Open
C011A Ferrari 328 Insufficient Engine Speed Increase During Self Test
C011A Alvis Tb Air Pump Circuit Malfunction/ (AIR) System Bank 1
C011A Suzuki Sx Mirror Driver Switch Assembly Circuit Failure
C011A Honda N Iii PWM Input Circuit Failure
C011A Dkw F93 Idle Switch Circuit Malfunction