PCM code P056

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PCM code P056

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Cadillac Forum >> Cadillac Models >> Cadillac Seville >> PCM code P056

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PCM code P056 - 12/15/2005 4:01:04 PM

lilchris1500

Posts: 1
Joined: 12/15/2005
Status: offline

I keep getting a P056 code but the service engine soon light does not stay on all the time. What should I do?

Post #: 1

RE: PCM code P056 - 1/12/2006 12:46:43 PM

Logan

Posts: 6
Joined: 1/12/2006
Status: offline

Hmmm.....that is the transmission input speed sensor. $20 part $2000 deep into the trans. It is NOT the VSS sensor.

You can check the transmission connections, also, note, that spark plug wires resting on any part of the engine harness can cause a false code.

Logan Diagnostic
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www.ledfix.com
www.logandieselusa.com

(in reply to lilchris1500)

Post #: 2