P2C11
Reductant Pump A Current Too Low
The current draw of reductant pump A is below the calibrated minimum for the commanded duty. Indicates open winding, partial supply interruption, or pump no longer drawing fluid (dry running).
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Common causes
Ordered by how often each turns out to be the cause.
- Pump motor winding partially openCommon
- Pump dry running - no fluid loadPossible
Parts involved
- Reductant Pump A
- Wiring Harness
- SCR Module
P2C11 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.