P208C Diagnostic Trouble Code

P208C 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 P208C diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P208C 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 P208C.

Fortunately, P208C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P208C Trouble Code For Specific Cars

P208C Nissan 1400 Child Seat Detection Circuit Open
P208C Honda N Iii PWM Input Circuit Failure
P208C Packard 7 DPFE Sensor Upstream Hose Off Or Plugged
P208C Eshelman Sport Car Injection Pump Fuel Metering Control "B" Malfunction (Cam/Rotor/Injector)
P208C Mercedes-benz 770 Air Bypass System
P208C Jaguar Ss Seat Driver Front Down Circuit Short To Battery
P208C Gaz Tschaika O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)