DTC P0130: Ho2S-1 Circuit Malfunction
- Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING CODES
. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle. Increase engine speed to 2000 RPM and hold for at least one minute. If DTC P0130 sets, go to next step. If DTC P0130 does not set, problem is intermittent, system is okay at this time. Check for poor connections or loose wires between HO2S-1 and PCM. See the WIRING DIAGRAMS
article. Repair as necessary.
- Turn ignition off. Disconnect HO2S-1 4-pin connector. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle. Measure voltage between HO2S-1 terminals No. 1 (Blue wire) and No. 2 (White wire). See Fig 1
. If voltage is more than 0.1 volt, go to next step. If voltage is not more than 0.1 volt, replace HO2S-1.
- Turn ignition off. Reconnect wiring to HO2S-1. Start engine. Measure voltage between PCM 22-pin connector terminals No. 18 (White/Red wire) and No. 22 (Green/Blue wire). If voltage is not more than 0.1 volt, repair open or short in White/Red wire between PCM and HO2S-1. If voltage is as specified, substitute a known good PCM, then recheck. If symptom or indication goes away, replace original PCM.
Courtesy of AMERICAN HONDA MOTOR CO., INC.