BMW 850i Engine Control Module Replacement Cost.

The average cost for a Engine Control Module Replacement is between $1113 and $1126. Labor costs are estimated between $44 and $56 while parts are priced between $1069 and $1070. Estimate does not include taxes and fees.

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Best Practices

Many vehicles have upgradeable software in their PCM, so be sure to check for any Technical Service Bulletins (TSBs) that pertain to possible problems with the PCM.

Use an OEM PCM and install the latest software during its replacement

Common Symptoms

Here a few common symptoms that may occur when the PCM is defective:

1. Several unrelated codes are set simultaneously

2. Vehicle may not start and/or run

3. Engine has poor performance without setting any codes

Common Misdiagnoses

A PCM can be replaced when the cause of the vehicle malfunction is due to a defective engine sensor that was overlooked in the initial diagnosis.

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