C264D Diagnostic Trouble Code

C264D 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 C264D diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Diminished fuel efficiency

Possible Causes :

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.
Defective ECU strategies or components will prevent proper regeneration
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

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. 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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code C264D 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 C264D.

Fortunately, C264D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C264D Trouble Code For Specific Cars

C264D Plymouth Voyager Exhaust Gas Recirculation Sensor A Circuit Low
C264D Leyland Marina Throttle Control Unit Detected Loss of Return Spring
C264D Napier 90 Can Link ECM/ABSCM Circuit / Network Malfunction
C264D Audi Q7 ASM Control Circuit High
C264D Sunbeam 10 MAF Sensor Intermittent/ Check of all OBDII Systems Not Complete
C264D Chevrolet Copper-cooled Driver Side Airbag Fault
C264D Moretti 500 Battery Voltage High