C256C Holden Calais OBD Code

OBD/2 C256C error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

C256C Holden Calais Error Code Repair Process :

For eic switch-1 assembly circuit open check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. C256C error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks eic switch-1 assembly circuit open with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Holden Calais C256C OBD2 Code

A common cause of code C256C is the failure of EIC Switch-1 Assembly Circuit Open, but there are several other possible causes as well, such as ;

Dirty Oil
Camshaft Position Sensor harness is open or shorted
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Fuel pressure

C256C is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C256C Holden Calais OBD Code

C256C Holden Calais Error Code Repair Process :

Common Causes of Holden Calais C256C OBD2 Code

C256C code for other Holden cars