P0670 Diagnostic Trouble Code

P0670 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 P0670 diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

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)
Fuel with a large percentage of sulfur will clog the DPF quickly

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. 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. 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 P0670 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 P0670.

Fortunately, P0670 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0670 Trouble Code For Specific Cars

P0670 Ferrari P2 KAM Voltage Too Low
P0670 Lagonda 3-litre Shift Solenoid D Malfunction
P0670 Opel Grandland X Dim Panel Increase Input Circuit Open
P0670 Citroen Ak Floor Temperature Switch Circuit Malfunction
P0670 Holden Torana Power Window Master Circuit Short To Ground
P0670 Honda Lagreat Purge flow Sensor Circuit Intermittent
P0670 Chevrolet Sprint Electric Current Circuit Malfunction