DTC U0423-4A (Parking and Back-Up Sensor Control Unit)

WARNING: This page is about a different car, the 2022 Honda Accord, 2021 Honda Accord, 2020 Honda Accord, 2019 Honda Accord, and 2018 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0423-4A : Gauge Control Module Malfunction

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

DTC Description	DTC
U0423-4A Gauge control module malfunction

DTC (Parking and Back-Up Sensor Control Unit)

Gauge control module DTC check

-1. Check for DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Go to the indicated DTC's troubleshooting .

Go to step 2.

Problem verification

-1. Clear the DTC with the HDS.

-2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

-3. Wait for at least 6 seconds.

-4. Check for DTCs with the HDS.

DTC Description	DTC
U0423-4A Gauge control module malfunction

Is DTC U0423-4A indicated?

YES

The failure is duplicated. Check for poor connections or loose terminals in the parking and back-up sensor control unit 24P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the parking and back-up sensor control unit .

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .