1990 GEO PRIZM code 12 = RPM Signal Distributor, distributor circuit,starter signal circuit, igniter circuit igniter, ECM 1990 GEO PRIZM code 71 = EGR EGR system including hoses,gas temperature sensor circuit, gas temperature sensor, vacuum switching valve for the EGR circuit, ECM
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Auto Zone will check your engine light codes for FREE...
engine light
It requires a scanner to properly diagnosis a check engine light.
I clear the check engine light with a Scangauge II. But most ODB-II devices can read and clear the code.
To check engine light codes one would have to bring your vehicle to a mechanic who can use a computer to check the computer chip that regulates this function.
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you check the system for trouble codes.
The check engine light has nothing to do with the washer fluid. If the check engine light is on you need to have it checked for codes with a scanner.
May have to change oil.
If you mean the 'Check Engine' light it's on the instrument cluster on the left side near the engine coolant guage.
Auto Zone will check your engine light for free... Write down the codes and go from there.