C2528 OBD Code

OBD/2 C2528 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.

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

C2528 Error Code Repair Process :

The scent may C2528 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such C2528, so if the inside of your car transmission transfer case counter clockwise shift relay coil short circuit to battery as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

Common Causes of C2528 OBD2 Code

A common cause of code C2528 is the failure of Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery, but there are several other possible causes as well, such as ;

Dirty Oil
Faulty spark plug (s)
Foreign matter caught in fuel filler cap
Variable Camshaft Timing (VCT) position circuit is open or shorted

C2528 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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C2528 OBD Code

C2528 Error Code Repair Process :

Common Causes of C2528 OBD2 Code

C2528 code for other cars