C264A Diagnostic Trouble Code

C264A 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 C264A diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
Poor acceleration

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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. 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.

Process Tips

Diagnostic trouble code C264A 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 C264A.

Fortunately, C264A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C264A Trouble Code For Specific Cars

C264A Mercedes-benz Vaneo Air Suspension Height Sensor Power Circuit Failure
C264A Dodge Conquest Ignition Coil D Secondary Circuit Malfunction
C264A Isuzu Axiom SCP (J1850) Invalid or Missing Data for Steering Column
C264A Peugeot 3008 EGI Glow Plug Secondary Failure
C264A Kia Spectra Sensor Power Supply Low Input
C264A Simca Plein Ceil Intermediate Shaft Speed Sensor Circuit
C264A Ford C-max Ii Low A/C Cycling Period