DTC B1175 (2017 2018 2019 2020 2021 2022 2023)

DTC B1175  : Fuel level sensor (fuel gauge sending unit) circuit malfunction

DTC (Gauge Control Module)

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

1. Problem verification

   -1. Check the fuel gauge.

   Does the fuel gauge move to the empty position and the low fuel indicator blink?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Fuel gauge operation check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Fuel tank unit 4P connector

   -3. Connect terminals A and B with a 2 Ω resistor and a jumper wire.

   Terminal A	Fuel tank unit 4P connector (female terminals) No. 2:
   Terminal B	Body ground

   Courtesy of HONDA, U.S.A., INC.

   -4. Remove the No. A15* 1/A26* 2 (10 A) fuse for at least 10 seconds, then reinstall it.

   *1: With AC power outlet

   *2: Without AC power outlet

   -5. Turn the vehicle to the ON mode.

   -6. Check the fuel gauge.

   Does the fuel gauge move to the full position?

   YES 

   Go to step 4.

   NO 

   Go to step 3.

3. Open wire check (FUEL+ line)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode Fuel tank unit 4P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 21
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   Repair an open or high resistance in the wire.

   NO 

   The FUEL+ wire is OK. Replace the gauge control module .

4. Open wire check (FUEL- line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   Gauge control module 32P connector

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Fuel tank unit 4P connector: disconnected Gauge control module 32P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 22
   Test point 2	Fuel tank unit 4P connector (female terminals) No. 4:

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The FUEL- wire is OK. Replace the fuel tank unit .

   NO 

   Repair an open or high resistance in the wire.