DTC B1601 (Keyless Access Power Control Unit) (2025)

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2025 Honda Odyssey, 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, and 2021 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1601 : Keyless access control unit internal (CPU) error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE 1 AND TEST MODE 2 (WITHOUT THE HDS) or BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A - INITIAL COMMUNICATION AND DTC CHECKS or BODY ELECTRICAL TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE B - CONTROL UNIT NOT COMMUNICATING .

DTC Description	DTC
B1601 Keyless access control unit internal (CPU) error

DTC (Power Control Unit)

Problem verification

-1. Clear the DTCs with the HDS.

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

-3. Check for DTCs with the HDS.

DTC Description	DTC
B1601 Keyless access control unit internal (CPU) error

Is DTC B1601 indicated?

YES

Replace the body control moduleBODY CONTROL MODULE REMOVAL AND INSTALLATION .

Intermittent failure, the system is OK at this time.