4 Diagnostic Codes for 2002 Honda Accord

P1166 pertains to the upstream O2 sensor heater circuit. P1167 pertains to the upstream O2 sensor output.

Start by changine the one closest to the engine. Probably in the exhaust manifold right in the engine bay. Recommend you buy OEM, as I've heard of people having issues with aftermarket sensors.
There's also a fuse for the heater circuit in the O2 sensors that could be blown, but I'd bet it's just a bad sensor.

Check o2 heater fuse and relay 1st.

I'll Assume you're talking about CEL codes, so here you go:


http://honda-tech.com/honda-accord-1990-2002-2/check-engine-light-codes-cel-diagnostic-trouble-codes-dtc-malfunction-indicator-light-mil-1490107/

Hello there:
P1167 and P1166 codes relate to the primary O2 sensor heater malfunction.
there are two different O2 sensors, a "universal" sensor from Autozone and a supposedly OEM sensor from O'Reilly's. Both of them may cause the car to throw a p1166 or P1167 code and run rough. so i highly recommend getting a O2 sensor from Honda, and this will fix the problem .
It turns out that none of the aftermarket probes from Bosch or Denso will work on a ULEV (F23A4) 4 cyl. engine. Honda had different part number probes for the normal VTEC 4 cyl. and the ULEV Vtec engine and the probes look different and have different length cables. The computers at O'Reilly's, Autozone, or NAPA made no distinction between these two engine types.

You can try resetting the system (clear the codes) by removing, with the key off, the number 13 fuse (7.5 amp)(CLOCK/BACKUP) from the fuse/relay box (end of the instrument panel, passenger's side) for 10 seconds. If the code comes back, you still have a problem.
Hope this helps you.

1167 is your air/fuel sensor 1. also known as o2 sensor. replace this clear all codes and you should be good

P 0151 oxygen sensor 1, bank 2 - low voltage
Cause- Exhaust leak, wiring short to earth

P0650- Malfunction indicator light

P1166 & P1167 these codes do not exist, if you check these numbers I may be able to assist you further.