P0672 Diagnostic Trouble Code

P0672 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 P0672 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
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 :

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. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P0672 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 P0672.

Fortunately, P0672 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0672 Trouble Code For Specific Cars

P0672 Alfa Romeo 145 ABS Outlet Valve Coil RF Circuit Open
P0672 Chevrolet Omega EGR Metering Orifice Restricted
P0672 Dixi S IAT Sensor Open/Short
P0672 Toyota Premio Park / Neutral Switch Input Circuit High
P0672 Hongqi Ca RF CORNER LAMP OUTPUT Ckt Short to Battery
P0672 Nissan Mm Compressor Failure
P0672 Plymouth Neon Evaporative Emission Control System Vent Control Circuit Open