DTC P1164: Air/Fuel Ratio Sensor Range Performance Problem (Sensor 1)

WARNING: This page is about a different car, the 2003 Acura RSX. However, it is still accessible from the selected car via links, so may be relevant.

Perform ECM/PCM reset procedure. See ECM/PCM RESET PROCEDURE/CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM.
Start engine and hold at 3000 RPM, with no load (in park or neutral), until cooling fan comes on. Check for temporary DTC with scan tool.
If temporary DTC P1164 is not set, go to next step. If DTC is set, replace Air/Fuel Ratio (A/F) Sensor.
Test drive in position "D3" (M/T in 3rd gear). Starting at 1600 RPM, accelerate using Wide Open Throttle (WOT) for at least 5 seconds. Then decelerate for at least 5 seconds with throttle completely closed until readiness code or temporary DTC P1164 comes on. If temporary DTC P1164 is set, replace A/F sensor. If temporary DTC is not set, problem is intermittent. System is okay at this time. Check for poor connection(s) or loose wire(s) between C101 20-pin connector (under right side of dash), C401 24-pin harness connector (under left side of dash), A/F sensor relay 4-pin harness connector, A/F sensor 4-pin harness connector and Gray ECM/PCM 31-pin "A" harness connector. See Figure , Fig 1 , Fig 2 , Fig 3 and Fig 5 . See appropriate wiring diagram under ENGINE PERFORMANCE in WIRING DIAGRAMS.

Fig 1: Identifying 20-Pin Wire Harness Connector C101
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Identifying 24-Pin Wire Harness Connector C401
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 3: Identifying A/F Sensor 4-Pin Wire Harness Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 4: Identifying 12-Pin Wire Harness Connector C402
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: Identifying PGM-FI Main Relays Connectors & Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.