P02FF
Propulsion System Inactive Timer Performance
The timer that monitors how long the propulsion system has been inactive (used by hybrid and stop-start strategies to schedule rebalancing tasks) is not behaving plausibly — typically a clock or PCM-state fault.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Internal timer driftCommon
Parts involved
- Powertrain Control Module
P02FF 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.