C0009 Diagnostic Trouble Code

C0009 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 C0009 diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Some aftermarket accessories and performance modifications

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. 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. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code C0009 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 C0009.

Fortunately, C0009 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0009 Trouble Code For Specific Cars

C0009 Datsun 1200 Heater Coolant Temp sensor circuit Short to GND
C0009 Adler Trumpf ABS Outlet Valve Coil LF Circuit Short To Ground
C0009 Lagonda 11.1 Shift Solenoid C Performance or Stuck Off
C0009 Daewoo Arcadia Fuel Trim Malfunction (Bank 1)
C0009 Daimler Conquest Head Rest Switch Circuit Failure
C0009 Bmw 530 Chime OUTPUT Request Ckt Short to Ground
C0009 Chevrolet Omega EGR Metering Orifice Restricted