P0707 Diagnostic Trouble Code

P0707 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 P0707 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
Hesitation upon acceleration

Possible Causes :

Some aftermarket accessories and performance modifications
A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

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. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P0707 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 P0707.

Fortunately, P0707 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0707 Trouble Code For Specific Cars

P0707 Toyota Corolla O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0707 Ford Escape Mass or Volume Air flow Circuit Range/Performance Problem
P0707 Dodge Maxx Ignition Key-In Circuit Short To Ground
P0707 Sbarro Stash Injection Pump Fuel Metering Control "A" Malfunction (Cam/Rotor/Injector)
P0707 Honda Ev PRNDL Input #2 Circuit Failure
P0707 Holden Cruze Pedal Position Sensor C Circuit Low Input
P0707 Talbot Tagora Mirror Passenger Right Circuit Short To Ground