C0865 Diagnostic Trouble Code

C0865 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 C0865 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. 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 C0865 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 C0865.

Fortunately, C0865 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0865 Trouble Code For Specific Cars

C0865 Mercedes-benz W196 Air Suspension LF Corner Down Timeout
C0865 Revere M HO2S Insufficient Switching Sensor 1
C0865 Daihatsu Cuore Gear Shift Module Communication Circuit Low
C0865 Bmw-isetta 611 Communication Link to Display and Switch Module Error
C0865 Ford Ranger Mirror Passenger Left Circuit Open
C0865 Renault Laguna 3 Hazard Flash Output Circuit Failure
C0865 Toyota 105 Multiple Gears Engaged