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earp
11-15-2015, 01:36 AM
What are the most common causes for these codes?
2000 GT 113600 miles

4thgenceli
11-15-2015, 03:25 PM
P0325 is knock sensor fault. Make sure its properly connected, not damaged or just replace it.

P0171 is a bank 1 AF lean fault. Check for any air leaks, o2 sensor, fuel pressure, etc.