C3626 Diagnostic Trouble Code

C3626 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 C3626 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

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. 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 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.

Process Tips

Diagnostic trouble code C3626 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 C3626.

Fortunately, C3626 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3626 Trouble Code For Specific Cars

C3626 Maserati 150 Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure
C3626 Chevrolet Four Ninety Dual Alternator Battery Lamp Circuit Malfunction
C3626 Fisker Tramonto Left Rear Center Sensor Circuit Short to Vbat
C3626 Mvs Venturi Camshaft Position Sensor Circuit High Input
C3626 Mercedes C 63 ABS Inlet Valve Coil Rear Circuit Failure
C3626 Rover 25 Ignition Coil - Cylinder 3 - Early Activation Fault
C3626 Volvo 164