C0243 Diagnostic Trouble Code

C0243 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 C0243 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
Poor fuel economy

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Dirty air cleaner element Damaged DPF

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code C0243 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 C0243.

Fortunately, C0243 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0243 Trouble Code For Specific Cars

C0243 Kia Carens Iii Seat Recline Forward/Backward Potentiometer Feedback Circuit Failure
C0243 Simca Vedette Intermediate Shaft Speed Sensor Circuit Range/Performance
C0243 Mitsubishi Space Runner Aux Heater Overheat Sensor Circuit Short to Ground
C0243 Suzuki Sx4 I Mirror Driver Switch Assembly Circuit Short To Battery
C0243 Volkswagen Up
C0243 Suzuki Sx Mirror Driver Switch Assembly Circuit Failure
C0243 Holden Xu Pressure Control Solenoid "C" Open Circuit