P2062: Reductant/Regeneration Supply Control Circuit/Open
Standardized SAE J2012 code · P20xx — Fuel & air metering and auxiliary emission controls
What does P2062 mean?
The control line that energises the DEF supply pump or regeneration heating circuit is open — no continuity through the load or harness.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
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
- High Open winding
- Medium Open wire
- Low Pin pushed back out of connector body
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2062 on the same make and model first.
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