P0636 Code - Power Steering Control Circuit Low

What Does P0636 Mean?

OBD-II Code Battery/charging system warning light illuminated is defined as a Power Steering Control Circuit Low

Despite the code definition provided, most manufactures use this code to identify improper charging system operation. If the engine computer (PCM) detects the Alternator is not providing sufficient output to run the electrical systems on the vehicle and recharge the battery, code P0636 will set.Any non-essential electronics will also be disabled (i.e. Radio, Climate Control)

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What are the common causes of P0636 ?

Possible causes for the P0636 trouble code include:

• Faulty power steering pressure or position sensor
• Damaged electrical components in the controller area network (CAN) bus
• Loose or damaged control module ground wire or ground strap
• In rare cases, a faulty CAN bus

How do you troubleshoot P0636 ?

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. 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 the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Searches related to P0636 Code - Power Steering Control Circuit Low

• P0636
• P0637