The P2061: Reductant Injection Air Pump Control Circuit High refers to a fault where the air pump control circuit is experiencing higher-than-expected voltage. This air pump is essential for supplying the airflow needed for the reductant (DEF) injection system to function properly. A high voltage issue may lead to improper air pump operation, causing emissions control problems. The problem can arise from a faulty air pump, wiring issues, or connector malfunctions.
P2061 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2061: Reductant Injection Air Pump Control Circuit High |
| Is it serious? | Yes, this can lead to malfunctioning of the reductant system, which may increase vehicle emissions. |
| Possible causes | – High voltage in the air pump control circuit – Faulty air pump or wiring – Connector issues |
| How to diagnose? | – Measure voltage in the control circuit – Test the air pump – Check wiring and connectors |
P2061 Meaning
The P2061 code indicates that the air pump control circuit is receiving a higher voltage than the manufacturer’s specifications. This air pump is responsible for providing the airflow necessary for the correct injection of DEF into the exhaust system. High voltage in the control circuit could cause improper operation of the air pump, potentially affecting the efficiency of the emissions control system.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional fault codes that could provide more insight into the problem. | OBD-II Scanner |
| Measure Voltage in the Circuit | Use a multimeter to measure the voltage in the air pump control circuit and compare it to the manufacturer’s specifications to confirm high voltage. | Multimeter |
| Test the Air Pump | Use a diagnostic tool to test the air pump and verify that it is functioning within the correct voltage range and airflow specifications. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to the air pump for signs of damage, corrosion, or loose connections that may cause excessive voltage. | Flashlight, Multimeter |
| Clear the Code and Test Drive | After repairs, clear the fault code using an OBD-II scanner and take the vehicle for a test drive to ensure the issue is resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the system after the test drive to confirm that the P2061 code does not return. If it reappears, further diagnostics may be required. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)