Speedometer issue - speed sensor code
 

Anybody have any experience with a speedometer problem and a code for the vehicle speed sensor?

Re: Speedometer issue - speed sensor code
 

Do you have a code that has been set? Your question is pretty vague!

Re: Speedometer issue - speed sensor code
 

Code 24

Re: Speedometer issue - speed sensor code
 

Code 24 and NO speedometer? Have you done any under car maintenance recently? I'd check first the obvious. I'd check the connector at the VSS (L/R of transmission) and clean it also while there. No other codes just 24? Have you done a recent PROM or done anything at all that involved maybe ECM connectors?

Re: Speedometer issue - speed sensor code
 

Yes. We just replaced the ECM.

Re: Speedometer issue - speed sensor code
 

Check all three ECM connections, check that the PROM is seated correctly. Do you have the old ECM?

Re: Speedometer issue - speed sensor code
 

Yes, but the old ECM is defective. We will check the ECM and PROM connections though - thanks.

Re: Speedometer issue - speed sensor code
 

Did the car run and the speedometer work with the "defective" ECM? If yes then put it back for diagnostics should you find nothing else!

Re: Speedometer issue - speed sensor code
 

Car would run but badly - would not want to drive it that way. No indication of a prior speedometer problem, though.