The P2062: Reductant/Regeneration Supply Control Circuit/Open refers to a problem where the control circuit responsible for supplying reductant (DEF) or regeneration fluid is open. This open circuit prevents proper operation of the system, which could lead to issues with emissions control. Common causes include a break in the circuit, faulty components, or issues with wiring and connectors.
P2062 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2062: Reductant/Regeneration Supply Control Circuit/Open |
| Is it serious? | Yes, it can lead to failure in the reductant injection or regeneration system, causing increased emissions. |
| Possible causes | – Open circuit in the supply control circuit – Faulty components or wiring – Connector issues |
| How to diagnose? | – Inspect the supply control circuit for open conditions – Test the components – Check wiring and connectors |
P2062 Meaning
The P2062 code indicates that the supply control circuit, which manages the flow of reductant (DEF) or regeneration fluid into the exhaust system, is open. This prevents the system from functioning properly, which can result in increased emissions. The circuit may be open due to a fault in the wiring, connectors, or components, such as the reductant injector or pump, leading to incomplete dosing of the DEF or regeneration fluid.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for any additional codes related to the reductant or regeneration system that could provide further information. | OBD-II Scanner |
| Inspect Supply Control Circuit | Inspect the supply control circuit for any signs of an open condition, such as broken or disconnected wiring or damaged connectors. | Flashlight, Multimeter |
| Test Components | Use diagnostic tools to test the functionality of components like the reductant injector or pump to ensure they are working properly. | Multimeter, Diagnostic Tool |
| Check Wiring and Connectors | Examine the wiring and connectors for any signs of corrosion, damage, or disconnection that could result in an open circuit. | Flashlight, Multimeter |
| Clear the Code and Test Drive | After repairs, clear the fault code with an OBD-II scanner and take the vehicle for a test drive to confirm the issue has been resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the system after the test drive to ensure that the P2062 code does not return. If it reappears, further diagnostics may be required. | OBD-II Scanner |
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