P22C1 Diagnostic Trouble Code

P22C1 is a kind of OBD-II Diagnostic P-Powertrain 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 P22C1 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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. 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.

Process Tips

Diagnostic trouble code P22C1 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 P22C1.

Fortunately, P22C1 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P22C1 Trouble Code For Specific Cars

P22C1 Ac Acedes-magna ABS Fluid Dumping Exceeds Maximum Timing
P22C1 Pininfarina Osee EV Battery Pack Temperature Fault
P22C1 Chevrolet Equinox 2 Drivers Seat Belt Buckle Switch Resistance out of Range
P22C1 Studebaker Avanti Lamp Turn Signal Rear Output Circuit Failure
P22C1 Rapier Sports Fuel Trim Malfunction (Bank 2)
P22C1 Honda Edix Pressure Transducer Main / Primary signal Faulted
P22C1 Mercedes R 350 Accessory Delay Relay Coil Circuit Open