C0193 Diagnostic Trouble Code

C0193 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 C0193 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
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 :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Faulty IMRC actuator/sensor

Repair Processes :

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. 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.

Process Tips

Diagnostic trouble code C0193 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 C0193.

Fortunately, C0193 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0193 Trouble Code For Specific Cars

C0193 Renault Rs Heater Coolant Temp sensor circuit Short to GND
C0193 Aston Martin Vanquish Air Suspension Warning Lamp Circuit Short To Ground
C0193 Toyota Wish Passenger Seatback Forward Switch Circuit Short to Ground
C0193 Chenard Walcker Tank Door Unlock Disarm Switch Circuit Open
C0193 Mercedes Glk Accelerometer Sensor Circuit Failure
C0193 Seat Arona Injector Circuit Malfunction - Cylinder 9
C0193 Bristol 411 Crankshaft Position Camshaft Position Correlation (Bank 2 Sensor A)