Reductant Injection Air Pump Control Circuit Low
The P2060 code indicates that the powertrain control module (PCM) has detected a low voltage condition in the control circuit of the reductant injection air pump. This pump is part of the selective catalytic reduction (SCR) system, which injects diesel exhaust fluid (DEF) into the exhaust stream to reduce NOx emissions. A low circuit voltage typically points to a wiring issue, a faulty pump, or a problem with the PCM itself.
1. Most Common Causes
- Short to ground in the power or signal wire of the SCR air pump
- Open circuit in the pump's ground connection
- Faulty DEF injection air pump (internal coil shorted)
- Corroded, loose, or damaged pins in the pump harness connectors
- Internal driver failure in the PCM or SCR control module
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or limp mode
- Increased emissions
- Possible DEF system warning messages
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the air pump control circuit voltage with a multimeter; compare to manufacturer specs.
Step 4: If circuit is good, test the air pump resistance and operation; replace if faulty.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can lead to reduced performance and increased emissions. The vehicle may enter limp mode, limiting speed and drivability.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, but can be higher if the pump or PCM needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.