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The check engine light comes on when the ECU detects a problem with the emission system. To determine what the problem is you need to have the ECU scanned with an OBD2 scan tool. The code you retrieve will tell you where to start looking for the problem.
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1999 ls Lexus check engine light comes on?
why do check engine light comes on
When the check engine light comes on what could be the problem on a 1994 Oldsmobile royal 88?
If the check engine light is on, use a code scanner to find out why.
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changed battery engine light stays on
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If Check engine light comes on what could it mean in a 2002 Passat?
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Why your truck 2000 5.9 cummins has the engine protection light on?
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Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.
Why did the check gauges light come on?
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86 olds cutlass check engine light comes on after warm up?
Could be the catalytic converter.
