Volkswagen Jetta Problem Report

Volkswagen Jetta Check Engine Light on, Multiple Possibilities

(10 reports)

The Check Engine Light may illuminate due to a faulty oxygen sensor and/or coolant temperature sensor. Proper diagnoses will be required to confirm the fault.

I've had problems with both the oxygen sensor sometimes acts up and the temp always reads between 160 and 230. -
Mechanic diagnosed the oxygen sensor as malfunctioning, but he cannot fix it. I have to take it to the dealer. -
PO422,PO506 &PI582 -
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