Free PDF guide
The 30 Most Common OBD2 Codes and How to Fix Them
One page per code: what it means, whether you can drive, what to check first and what it may cost.
- 37-page PDF, ready to print or read on your phone
- Instant download, plus a copy of the link in your inbox
- Free in exchange for your email
- Available in English and Spanish
These 30 codes account for most check engine lights: catalyst (P0420), misfires (P0300 and P0301), lean mixture (P0171), EVAP leaks (P0442 and P0455), thermostat (P0128) and the MAF, oxygen, crankshaft and camshaft sensors, among others.
Each code gets one page with the same layout, easy to follow even if you are not a mechanic: what it means in plain words, severity, whether you can drive, difficulty, estimated cost, symptoms, most common causes, what to check first in order and how it gets fixed.
What the guide covers
- Index of the 30 codes
- Steady or flashing light and the severity of each code
- How to read a code and what bank and sensor mean
- One page for each code: P0011, P0016, P0101, P0102, P0113, P0128, P0133, P0135, P0141, P0171, P0172, P0174, P0299, P0300, P0301, P0325, P0335, P0340, P0401, P0420, P0430, P0440, P0442, P0446, P0455, P0456, P0500, P0505, P0507 and P0700
- Diagnosis in 5 steps and mistakes that cost money
