Fix P2061: STEP-BY-STEP diagnostic GUIDE!

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

CodeInformation
MeaningP2061: 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

ActionDescriptionTools Needed
Check for Other CodesUse 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 CircuitUse 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 PumpUse 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 ConnectorsInspect 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 DriveAfter 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 CodesRe-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
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