C0196 Diagnostic Trouble Code

C0196 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 C0196 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 :

If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. Now, clear the codes and test-drive the vehicle to see if the code is reset. 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 C0196 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 C0196.

Fortunately, C0196 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0196 Trouble Code For Specific Cars

C0196 Fageol Fageol Injector Circuit Malfunction - Cylinder 10
C0196 Lancia Stratos Stability Control Inhibit Warning
C0196 Smart Roadster Lamp Anti-Theft Indicator Circuit Short To Battery
C0196 Maserati 228 Transmission Clutch Interlock Safety Switch Circuit Failure
C0196 Mercedes-benz 220 Air Bag Passenger Circuit Failure
C0196 Mitsubishi A10 Audio Center Amp is not responding
C0196 Lotus Seven Traction Control of Brake Exceeds Time-Out