C0190 Diagnostic Trouble Code

C0190 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 C0190 diagnostic trouble code may include:

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

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code C0190 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 C0190.

Fortunately, C0190 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0190 Trouble Code For Specific Cars

C0190 Alfa Romeo Rm Air Bag Crash Sensor #1 Ground Circuit Short To Ground
C0190 Chrysler Thunderbolt Exhaust Pressure Control Valve High
C0190 Nissan Lucino Column Tilt Feedback Potentiometer Circuit Short to Battery
C0190 Simca 1307 Intake Manifold Runner Control Circuit Malfunction
C0190 Mercedes Slk 230 Air Bag Diagnostic Monitor Ground Circuit Open
C0190 Holden Hx Power Sliding Detent (Latch) Circuit Failure
C0190 Maybach Sw Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery