Question about Honda CRX
If the light on the ECU is not flashing any codes then it is the ECU at fault, either due to an internal fault, or due to a supply voltage or earth fault.
If the light on the ECU is flashing then you need to count the flashes and pauses to formulate a fault code which will then point you in the right direction, but I would say that because you say the car would run okay whilst the PGM FI light was on then it could be the primary O2 sensor at fault.
However, I would look at the light on the ECU before condemning anything.
Posted on Jun 20, 2008
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Posted on Jan 02, 2017
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