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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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2007 crown victoria police code P1633. The check engine

Customer Question

2007 crown victoria police code P1633. The check engine light is off for about 30 seconds when first started (warm or cold) then comes on. Get code P1633
Submitted: 1 year ago.
Category: Ford
Expert:  Jared D replied 1 year ago.

1. Check fuse 3 in the engine compartment fuse box for battery voltage through it at all times. If OK, access the Powertrain Control Module (PCM) at the rear of the driver side fender apron, and check for battery voltage at all times on the Red/White wire at pin 45 of connector C175b on the PCM. C175b is the middle connector of the three connectors on the PCM. If no voltage is present, service the open wire between fuse 3 and the PCM. Look for problems in the wiring harness that runs across the front of the car, behind the front bumper area, especially where the harness turns the corners at the edges of the radiator supports.

2. If battery voltage is present at all times on pin 45 of C175b, check all the PCM grounds and if OK, replace the PCM (PCM configuration may be necessary, using a Ford scan tool or equivalent).

Expert:  Jared D replied 1 year ago.

Please let me know if you need additional info.

Expert:  Jared D replied 1 year ago.

Just wanted to check and see if you need any additional info.

Please let me know if you do, and if you are ready to rate.