C2805 Diagnostic Trouble Code

C2805 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 C2805 diagnostic trouble code may include:

If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Corroded or damaged connector
Reduction in engine performance, especially at low RPM levels
Malfunction Indicator Lamp (MIL) illuminated

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Dirty air cleaner element Damaged DPF

Repair Processes :

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

Process Tips

Diagnostic trouble code C2805 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 C2805.

Fortunately, C2805 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2805 Trouble Code For Specific Cars

C2805 Bmw 740 Climate Control A/C Pressure Switch Circuit Open
C2805 Honda N360 RADIO PRESENT SWITCH Ckt Failure
C2805 Bristol 603 Crankshaft Position Sensor A Circuit Intermittent
C2805 Daihatsu Applause Gear Shift Foward Actuator Circuit Low
C2805 Vauxhall Wyvern Pressure Transducer Main / Primary signal Faulted
C2805 Riley 2.5 Hood Switch Circuit Short To Battery
C2805 Apollo Gt Air Suspension LF Height Sensor Circuit Short To Ground