P060B
Internal Control Module A and D Processing Performance
The ECU's analog-to-digital converter does not deliver consistent results - typically reference voltage drift, multiplexer fault, or noise on the analog ground.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Common causes
Ordered by how often each turns out to be the cause.
- ADC internal faultCommon
Parts involved
- ECU Internal Adc
P060B is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.