The engine computer has detected an internal processor fault. The driver may notice a no-start, stalling or limited power, and other codes may appear.
Likely causes, most common first
- Low battery voltage or poor power supply
- Poor ground at the computer
- Water or corrosion in the computer connector
- Internal computer fault
Parts usually involved
- Engine computer
- Battery
- Ground cables
- Computer connector
Test before you replace
Check battery voltage, computer power and grounds, and look for software updates before replacing the computer.
General guidance for generic OBD2 codes. Always follow the maker's procedure for the car in front of you.