DTC B1175: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Open

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Clear the DTCs with the HDS.
Turn the ignition switch OFF, and then back ON (II).
Check for DTCs with the HDS.
Is DTC B1175 indicated?
1. YES - Go to step 4.
2. NO - Intermittent failure, the fuel level sensor circuit is OK at this time. Check for loose or poor connections.
Do the fuel gauge sending unit test (see FUEL GAUGE SENDING UNIT TEST ).
Is the fuel gauge sending unit OK?
1. YES - Go to step 5.
2. NO - Replace the fuel tank unit.
Disconnect the fuel pump 5P connector and the gauge control module connector A (30P) and check for loose or damaged terminals.
Turn the ignition switch ON (II).
Reconnect the connectors, and check for voltage between the No. 3 and No. 4 terminals of gauge control module connector A (30P) and No. 1 and No. 2 terminals of the fuel tank unit 5P connector.

Fig 1: Checking Voltage Between No. 3 & 4 Terminals Of Gauge Control Module Connector A (30P) And No. 1 & 2 Of Fuel Tank Unit 5P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1 V?
1. YES - Replace the gauge control module.
2. NO - Repair the loose connection or open in the BLK/WHT or YEL/BLK wire between the gauge control module and fuel tank unit.