C3190 Diagnostic Trouble Code

C3190 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 C3190 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
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. 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 C3190 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 C3190.

Fortunately, C3190 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3190 Trouble Code For Specific Cars

C3190 Sunbeam 3-litre Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
C3190 Renault Juva Glow Plug Monitor Fault (Bank #2)
C3190 Isuzu Rodeo SCP (J1850) Invalid or Missing Data for Vehicle Id (VIN)
C3190 Lancia Artena Speed Wheel Sensor LF Circuit Open
C3190 Yes! Roadster
C3190 Mitsubishi Pajero Iv Aux Heater Coolant Pump Circuit Short to Ground
C3190 Bentley Azure Battery Power Supply ECU Circuit Failure