DTC C1100-54

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 C1100-54 : Piston Position Not Learned

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC Description	DTC
C1100-54 Piston Position Not Learned

DTC (VSA)

Problem verification

-1. Turn the vehicle to the ON mode.

-2. Clear the DTC with the HDS.

-3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.

-4. Check for DTCs with the HDS.

DTC Description	DTC
C1100-54 Piston Position Not Learned

Is DTC C1100-54 indicated?

YES

The failure is duplicated. Go to step 2.

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

Piston position learn operation check

-1. Clear the DTC with the HDS.

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

-3. Apply and release the parking brake several times.

-4. Check for DTCs with the HDS.

DTC Description	DTC
C1100-54 Piston Position Not Learned

Is DTC C1100-54 indicated?

YES

Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .

Troubleshooting is complete.