P1633 Diagnostic Trouble Code Discussion for June 2015
TCM Internal - Test External Watchdog Performance
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| Help Request | Posted | |
| 2011 Ford F-250 Super Duty XL 6.2L long crank times VIN: 1FTBF2B62B P1633: Keep Alive Power Voltage Too Low. ... starts & runs fine. Clean throttle body, check plugs & ignition system. Good fuel pressure. Suspect the code P1633 is related, checked all powers & grounds, cleaned where needed. Still long crank times & hard code P1633. Cant find any reall... |
June 08, 2015 |
