Check Engine Codes
What OBD-II trouble codes mean, their common causes and the cost to fix each one.
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P0420 Code: Meaning, Causes and Cost to Fix
P0420 means the catalytic converter on bank 1 isn’t working efficiently. Learn the real causes, whether it’s safe to drive, and what…
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P0300 Code: Random Misfire Meaning and Cost to Fix
P0300 means your engine is misfiring in random or multiple cylinders. See the common causes, when to stop driving, and what each…
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P0171 Code: System Too Lean (Bank 1) and Cost to Fix
P0171 means your engine is getting too much air or too little fuel on bank 1. See the most common causes, how…