C3370 Diagnostic Trouble Code

C3370 is a kind of OBD-II Diagnostic C-Chassis 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 C3370 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
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 :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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.

Process Tips

Diagnostic trouble code C3370 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 C3370.

Fortunately, C3370 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3370 Trouble Code For Specific Cars

C3370 Chrysler Gs Evaporative Emission Control System Leak Detected
C3370 Kia Carens Iii Seat Recline Forward/Backward Potentiometer Feedback Circuit Failure
C3370 Porsche Cayenne Type 92a Fuel Pump Control Out Of Range
C3370 Mazda Cu-x Transmission Transfer Case Disengaged Solenoid Short to Battery
C3370 Subaru Stx Lockup Solenoid System
C3370 Skoda 1201 Key Line Voltage
C3370 Pontiac Catalina Exhaust Pressure Sensor High