C2045 Diagnostic Trouble Code

C2045 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 C2045 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon acceleration
Engine surge

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.
Defective ECU strategies or components will prevent proper regeneration

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. 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.

Process Tips

Diagnostic trouble code C2045 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 C2045.

Fortunately, C2045 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2045 Trouble Code For Specific Cars

C2045 Alvis Tf Air Suspension Front Compressor Relay Circuit Failure
C2045 Toyota Kluger Oil Pressure Control Solenoid Circuit Malfunction
C2045 Elva Gt Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
C2045 Austin Sports Aux A/C Control Switch Reference Circuit Short to Battery
C2045 Fiat Linea Lamp Turn Signal Front Output Circuit Short To Ground
C2045 Maserati 3.7 Transmission Clutch Interlock Safety Switch Short Circuit To Battery
C2045 Ferrari 456 Intake Manifold Runner Control (Bank 1) Stuck Closed