P23CE
Fuel Heater Control Module Feedback Signal Performance
Same as P23CD with feedback in plausible range yet not matching the commanded heater state.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Feedback signal driftedCommon
Parts involved
- Fuel Heater Control Module
P23CE 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.