P0CA3
DC/DC Converter Step Up Voltage Performance
The DC/DC converter step-up (boost) voltage performance is outside calibration. Output voltage does not match commanded value.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Regulator characteristic driftedCommon
- Load mismatchPossible
Parts involved
- Dcdc Converter Step Up
P0CA3 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.