DTC Troubleshooting: P0134 (41) (K20Z: M/T)

DTC Troubleshooting: P0134 (41)

DTC P0134:  A/F Sensor (Sensor 1) Heater System Malfunction


NOTE:

1.Turn the ignition switch ON (II).

2.Clear the DTC with the HDS.

3.Start the engine, and let it idle without load (in Park or neutral) until the radiator fan comes on.

4.Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0134 indicated?


YES - Go to 5.


NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay (E), and the ECM/PCM.n


5.Turn the ignition switch OFF.

6.Replace the A/F sensor (Sensor 1).

7.Turn the ignition switch ON (II).

8.Reset the ECM/PCM with the HDS.

9.Do the ECM/PCM idle learn procedure.

10.Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?


YES - If DTC P0134 is indicated, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay (E), and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


NO - Go to 11.

11.Monitor the OBD STATUS for DTC P0134 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?


YES - Troubleshooting is complete.n


NO - If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor (Sensor 1), the PGM-FI subrelay (E), and the ECM/PCM, then go to 1. If the screen indicates NOT COMPLETED, go to 8 and recheck.