Check Engine Light comes on

[sambrown]

My "Check Engine" light comes on often when I'm driving." The orange one" It stays on for about a minute and then goes. Comes back on, then goes off again. Sometimes the red one comes on with it. When i break speed and slow down they both go off. What could cause this to happen???

Sam

[wolfe10]

Sam,


Please tell us what you are driving/what chassis/engine you have.

[PJStough]

Originally Posted by sambrown

My "Check Engine" light comes on often when I'm driving." The orange one" It stays on for about a minute and then goes. Comes back on, then goes off again. Sometimes the red one comes on with it. When i break speed and slow down they both go off. What could cause this to happen???

Sam

Check to see if any codes have been set, and if not, I would guess a loose connection or a poor ground.

[sambrown]

Oh my bad....2006 TS Envoy, Spartan Chassis

[magnun]

I had a similar issue on my 2002 Cummins ISC. Turned out to be a bad oil pressure sensor. Check to see if there’s some oil residue on the sensor.