Scania AMS DTC 4386 Reductant circuit, low pressure

Q: What does Scania AMS fault code 4386 mean?

Reductant circuit, low pressure. The reductant pressure is too low when the reductant pump is shut off. Code 4386 (decimal). Some diagnostic tools show it in hexadecimal as 001122.

Q: How to fix Scania AMS fault code 4386?

- Check the cable harness between V117 and the E67 control unit. - If no fault is found in the cable harness, renew V117. Verification - Run Venting the SCR system to verify that the fault is fixed. - Run Pressure sensor check to deactivate the fault code.

AMS AMS control unit · Scania

Code 4386 (decimal). Some diagnostic tools show it in hexadecimal as 001122.

In short

The reductant pressure is too low when the reductant pump is shut off.

Applies to: AMS2

What does Scania AMS fault code 4386 mean?

The reductant pressure is too low when the reductant pump is shut off.

What causes Scania DTC 4386?

- Fault in the reductant pressure sensor or in its harness-to-harness connectors or electrical cables.

How to fix Scania AMS fault code 4386?

Check the cable harness between V117 and the E67 control unit.
If no fault is found in the cable harness, renew V117. Verification - Run Venting the SCR system to verify that the fault is fixed. - Run Pressure sensor check to deactivate the fault code.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 4386 in other Scania systems

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