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P0642. 2006 Ford Explorer XLT with 4.0 V6

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Can anyone tell me what sensor voltage this is referring to?

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Hi there

This code is referring to any sensor that requires reference voltage. The reference voltage comes from the PCM, so you either have a broken wire or the PCM has failed.

P0642 FORD - Sensor Reference Voltage 'A' Circuit Low

Read more: https://www.autocodes.com/p0642_ford.html

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