DTC P1169: A/F Sensor (Sensor 1) LABEL Circuit High Input (2000-2001 M/T models)

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Reset the ECM with the HDS (see ECM RESET ).
Start the engine, and let it idle.
Wait at least 2 minutes.
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1169 indicated?
1. YES - Go to step 5.
2. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM.
Turn the ignition switch OFF.
Disconnect the A/F sensor (Sensor 1) 8P connector.
Turn the ignition switch ON (II).
Measure voltage between A/F sensor (Sensor 1) 8P connector terminal No. 4 and body ground.

Fig 1: Measuring Voltage Between A/F Sensor (Sensor 1) 8P Connector Terminal No. 4 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?
1. YES - Go to step 9.
2. NO - Repair open in the wire between the ECM (D12) and the A/F sensor (Sensor 1).
Turn the ignition switch OFF.
Disconnect ECM connector C (31P).
Connect ECM connector terminal C18 to body ground with a jumper wire.

Fig 2: Connecting ECM Connector Terminal C18 To Body Ground With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between A/F sensor (Sensor 1) 8P connector terminal No. 3 and body ground.

Fig 3: Checking Continuity Between A/F Sensor (Sensor 1) 8P Connector Terminal No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES - Replace the A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT .
2. NO - Repair open in the wire between the ECM (C18) and the A/F sensor (Sensor 1).