DTC P064D:00 [MZR 2.0 DISI i-stop]

DTC P064D:00	Internal control module A/F sensor processor performance problem
DETECTION CONDITION	• The A/F sensor IC integrated in the PCM converts to the voltage value for the fuel control and for the diagnosis based on the A/F sensor signal current and sends to the CPU (integrated in the PCM). If there is a transmission format error from the A/F sensor IC to the PCM, the PCM will detect a transmission error. MONITORING CONDITIONS • Drive Mode 03 (A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode) • Following conditions are met: ― Engine is running or ignition switch is ON ― A/F sensor signal voltage is 1.2V—battery voltage −1.2 V (PCM terminals 2Z, 2AC, 2AD) Diagnostic support note • This is a continuous monitor (A/F sensor, HO2S). • The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• PCM internal malfunction (between CPU and A/F sensor control IC communication line)

DTC P064D:00

Internal control module A/F sensor processor performance problem

DETECTION CONDITION

• The A/F sensor IC integrated in the PCM converts to the voltage value for the fuel control and for the diagnosis based on the A/F sensor signal current and sends to the CPU (integrated in the PCM). If there is a transmission format error from the A/F sensor IC to the PCM, the PCM will detect a transmission error.

MONITORING CONDITIONS

• Drive Mode 03 (A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode)

• Following conditions are met:

― Engine is running or ignition switch is ON

― A/F sensor signal voltage is 1.2V—battery voltage −1.2 V (PCM terminals 2Z, 2AC, 2AD)

Diagnostic support note

• This is a continuous monitor (A/F sensor, HO2S).

• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• PCM internal malfunction (between CPU and A/F sensor control IC communication line)

STEP	INSPECTION	ACTION
1	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) been recorded?	Yes	Go to the next step.
No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS 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	VERIFY DTC TROUBLESHOOTING COMPLETED • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR 2.0 DISI i-stop].) • Perform the Drive Mode 03 (A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode). (See OBD DRIVE MODE [MZR 2.0 DISI i-stop].) • Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
No	Go to the next step.
4	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR 2.0 DISI i-stop].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 2.0 DISI i-stop].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED

• Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (A/F sensor, HO2S related) been recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Information availability.

• Is any related Service Information available?

Yes