Speedometer not working

Tiny
BLUEHYDRO
  • MEMBER
  • 1998 DODGE DURANGO
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 124,000 MILES
Speedometer stop working and check engine light came on. Replace speed sensor and check engine light went out but speedometer still not working.
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Saturday, September 7th, 2019 AT 4:29 PM

1 Reply

Tiny
MASTERWRENCH
  • EXPERT
Hello,

On your particular vehicle the Anti-Lock Brake Module reads the signal from the wheel speed sensor and sends it out over the communications network to the other modules. In this particular case, there's two different modules that run the speedometer and that turn the check engine lamp on. The fact that the check engine lamp went out when you replaced the sensor definitely suggests that was the original issue.

In some cases, a module needs to be "reset" when issues like this occur. I would suggest performing what's known as a "capacitive discharge". It sounds complicated but it's really not. All you need to do is remove both battery terminals and touch them together for about 20 seconds. After this, reconnect them and see if the speedometer begins working.
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Sunday, September 8th, 2019 AT 9:07 PM

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