P2061
Reductant Injection Air Pump Control Circuit High
Auxiliary emissions (SCR/reductant)
Generic OBD-II
Medium
What it means
P2061 means the control module has seen high voltage (a likely short-to-power or open) in the circuit for the reductant injection air pump. On air-assisted SCR systems this pump helps atomize DEF (reductant) into the exhaust, so the fault is an emissions-system issue rather than a driving problem. The engine runs normally, but diesels may derate if the fault is left unrepaired.
Medium
Can I keep driving? Drivable short-term, but diesel SCR faults can lead to a speed/power derate if left unrepaired; fix it soon to stay legal.
Common symptoms
What you'll notice
- Check-engine light on (often with an emissions/DEF warning)
- SCR or exhaust-treatment warning messages
- Possible reduced-power/derate warning if the fault persists (diesel)
- Usually no noticeable change in engine feel
Common causes
Most likely first
- Short-to-voltage or open in the reductant air pump control circuit wiringLikely
- Failed reductant injection air pumpCommon
- Corroded or loose connector at the air pumpCommon
- Damaged or chafed harness in the control circuitLess often
- Faulty ECM/PCM or SCR control moduleLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and scan for related reductant/SCR codes.
- Inspect the air pump connector and wiring for a short-to-power, open, or corrosion; repair as needed.
- Test the air pump's control feed and ground with the circuit active.
- Test the air pump itself and replace it if it doesn't respond to command.
- If wiring and pump test good, have the SCR/ECM module evaluated. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2061?+
Short-term yes, but the reductant air-assist won't work correctly and diesels can derate over time. Repair it promptly.
Can I just clear P2061?+
It returns once the ECM re-checks the air pump control circuit, so the high-voltage fault or pump needs to be repaired.
Related codes
Often seen with P2061
Read & clear P2061 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX