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Topic: Cummins Speed Sensor Error (Read 378 times) previous topic - next topic

Cummins Speed Sensor Error

CHeck engine light came on as I was driving out of RV park this am.  Shows a Speed Sensor Abnormal error code.  From what I read cruise should be disabled.  Cruise works, speed indication works, but check engine light will not reset.  Any suggestion?  I am suspecting the connector became wet as I drove through a puddle immediately prior to check engine light. 
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Cummins Speed Sensor Error

Reply #1 –
That is probably it. Mine went off on a bump and also when it was wet. I had my over speed limit removed from the ECM so that did not happen any longer.  You can remove and reinstall the sensor and see if that helps.  Also if you have a seal issue with the transmission leaking it might hit that sensor too. 
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Cummins Speed Sensor Error

Reply #2 –
When yours went off did the check engine light reset?  Diagnostics shows one incident but has not reset since.
Steve DeLange
2005 U320T 40'
Pearland, Texas

Re: Cummins Speed Sensor Error

Reply #3 –
Never mind.  I was able to reset Check Engine light manually.
Steve DeLange
2005 U320T 40'
Pearland, Texas