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2007 Honda Accord Manual Transmission

DTC indicated: P1157

Usual remedy is to replace the oxygen sensor

But I wanted to follow the diagnostic tree in the service manual until I discovered something strange: ECU/PCM wire harness for Connector A and Connector B do not match colors in FSM

So this is the problem:

A/F Sensor Connector Terminal Views match colors in FSM

ECU/PCM wire harness for Connector A and Connector B do not match colors in FSM

Which of the several (about 4 connectors in all) is Connector A or B? So I can positively identify ECM/PCM Terminal (A31)

ECM A31 CONNECTOR PINOUT AIR FUEL RATION SENSOR PINOUT

  • Ate you sure you have the correct manual / diagram for that specific model of car? There are usually multiple diagrams - manual, auto, 4cyl, v6 etc etc – Solar Mike May 21 '18 at 5:12
  • My other thinking is does it really matter? Is the wiring working as specified? Do you have any inclination there was re-wire work done to the vehicle? If not, I'd bet it's just a variance where there's no real issue. Yes, confusing, but an issue? I'd bet not. – Pᴀᴜʟsᴛᴇʀ2 May 21 '18 at 13:48
  • @SolarMike I think I did but I maybe wrong – ElectronicsNewbie May 21 '18 at 17:24

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