P07C7 Diagnostic Trouble Code

P07C7 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 P07C7 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
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)
Faulty IMRC actuator/sensor

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. 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 P07C7 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 P07C7.

Fortunately, P07C7 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P07C7 Trouble Code For Specific Cars

P07C7 Volkswagen Caddy 3 RESCU/VEMS Input Circuit Short to Battery
P07C7 Messerschmitt Tiger Air Suspension RF Corner Down Timeout
P07C7 Marendaz 13 Transmission 4-Wheel Drive Low Indicator Circuit Failure
P07C7 Hotchkiss Torpedo Ride Control LR Shock Actuator Circuit Open
P07C7 Fiat 501 Lamp Anti-Theft Indicator Circuit Open
P07C7 Volkswagen California Reverse Engagement Error
P07C7 Daewoo Matiz Gate Select Position Circuit Range/Performance