C269C Diagnostic Trouble Code

C269C 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 C269C diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code C269C 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 C269C.

Fortunately, C269C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C269C Trouble Code For Specific Cars

C269C Toyota Vista Passenger Seat Occupant Detection Circuit Open
C269C Mercedes-benz 600 Air Bag Tone Warning Indicator Circuit Short to Battery
C269C Pag Nick Driver Memory Power Switch Indicator Circuit Short to Battery
C269C Davis Divan HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
C269C Toyota Camry O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
C269C Brutsch Pfeil Cruise Control Set Signal Malfunction
C269C Lombard Al-3 Timing Reference High Resolution Signal B No Pulses