C2065 Diagnostic Trouble Code

C2065 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 C2065 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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 relay (if equipped)

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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 C2065 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 C2065.

Fortunately, C2065 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2065 Trouble Code For Specific Cars

C2065 Nissan Commercial Clutch Actuator Circuit / Open
C2065 Oldsmobile 76 Cylinder 5 Injector Circuit High
C2065 Mazda Tribute A/C Evaporator Air Temperature Circuit Low
C2065 Mercedes E 250 ABS Power Relay Output Circuit Failure
C2065 Delage Delage Hydraulic Oil Temperature Sensor Circuit Low Input
C2065 Bugatti Type 13 Cylinder #7 High To Low Side Open
C2065 Mercedes-benz 500 Air Bag Safing Sensor Output Circuit Short To Battery