DTC P0054:00, P0060:00 [MZI-3.7]

id0102d2321300

DTC P0054:00 DTC P0060:00 | P0054:00: HO2S (RH) heater resistance P0060:00: HO2S (LH) heater resistance
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DETECTION CONDITION | • P0054:00 indicates HO2S (RH) heater resistance. • P0060:00 indicates HO2S (LH) heater resistance. • Heater current requirements too low or high in the HO2S heater control circuit.
POSSIBLE CAUSE | • Open circuit between HO2S terminal C and main relay terminal D • Damaged ENG BAR fuse • P0054:00: ― Short to ground in wiring harness between HO2S (RH) terminal A and PCM terminal 3N ― Open circuit in wiring harness between HO2S (RH) terminal A and PCM terminal 3N • P0060:00: ― Short to ground in wiring harness between HO2S (LH) terminal A and PCM terminal 3AM ― Open circuit in wiring harness between HO2S (LH) terminal A and PCM terminal 3AM • HO2S circuits are shorted each other • HO2S heater malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | INSPECT FOR POWER SUPPLY IN WIRING HARNESS • Turn the ignition switch off. • Disconnect the suspect HO2S connector. • Turn the ignition switch to the ON position (engine off). • Measure the voltage between the suspect HO2S wiring harness-side connector terminal C and ground. • Is the voltage more than 10 V? | Yes | Go to the next step.
No | Inspect the ENG BAR fuse. • If the fuse deterioration, replace the fuse. • If the fuse melts, repair for short to ground and replace the fuse. • If the fuse is normal, repair the open circuit. Go to Step 9.
4 | INSPECT HO2S HEATER FOR SHORT TO GROUND • Suspect HO2S connector is disconnected. • Turn the ignition switch off. • Disconnect the PCM connector. • Measure the resistance between suspect HO2S wiring harness-side connector terminal A and body ground. • Is the resistance more than 10 kilohms? | Yes | Go to the next step.
No | Repair or replace suspected part, go to Step 9
5 | INSPECT HO2S HEATER FOR SHORT IN WIRING HARNESS • Suspect HO2S and PCM connectors are disconnected. • Measure the resistance between the following terminals: ― HO2S terminal A (wiring harness-side) and HO2S terminal C (wiring harness-side) ― HO2S terminal A (wiring harness-side) and HO2S terminal D (wiring harness-side) ― HO2S terminal A (wiring harness-side) and HO2S terminal B (wiring harness-side) • Are the resistances more than 10 kilohms? | Yes | Go to the next step.
No | Repair or replace suspected part, go to Step 9
6 | INSPECT HO2S HEATER CIRCUIT FOR OPEN CIRCUIT IN WIRING HARNESS • Suspect HO2S and PCM connectors are disconnected. • Measure the resistance between the following terminals (wiring harness-side): ― P0054:00: • HO2S (RH) terminal A—PCM terminal 3N ― P0060:00: • HO2S (LH) terminal A—PCM terminal 3AM • Is the resistance less than 5.0 ohms? | Yes | Go to the next step.
No | Repair or replace suspected part, go to Step 9.
7 | INSPECT INTERNAL RESISTANCE OF HO2S HEATER • Suspect HO2S and PCM connectors are disconnected. • Measure the resistance between the suspect HO2S terminal A and C on the component side. • Is the resistance between 2—50 ohms? | Yes | Go to the next step.
No | Replace the suspect HO2S. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [MZI-3.7].) Go to Step 9.
8 | INSPECT HO2S CASE FOR SHORT TO POWER SUPPLY, HTR, AND SIGNRTN • Suspect HO2S and PCM connectors are disconnected. • Measure the resistance between the suspect HO2S terminal A and D on the component side. • Measure the resistance between the suspect HO2S terminal A and body ground. • Is the resistance more than 10 kilohms? | Yes | Go to the next step. (The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.)
No | Replace the suspect HO2S. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [MZI-3.7].) Go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0054:00, P0060:00 HAVE BEEN COMPLETED • Verify that all disconnected connectors reconnected. • Clear the DTC from the PCM memory using the M-MDS. • Start the engine and run it at idle. • Perform the KOEO or KOER self-test. (See KOEO/KOER SELF TEST [MZI-3.7].) • Is the PENDING CODE for this DTC present? | Yes | Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) Go to the next step.
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZI-3.7].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Troubleshooting completed.