Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p062f internal control module eeprom error

Subaru Legacy BN/BS (2015-2019) Service Manual / Continuously variable transmission (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p062f internal control module eeprom error

DTC DETECTING CONDITION:

Detected when two consecutive driving cycles with fault occur.

TROUBLE SYMPTOM:

TCM EEPROM malfunction

STEP	CHECK	YES	NO
1.CHECK DTC. 1) Perform the Clear Memory Mode using the Subaru Select Monitor. Clear Memory Mode 2) Read the DTC.	Is DTC P062F displayed-	Replace the TCM. Transmission Control Module (TCM) Transmission Control Module (TCM)	Current condition is normal. Check for interference from noise, etc.

1. OUTLINE OF DIAGNOSIS

Diagnosis 1

• Judge the malfunction in EEPROM area of the TCM.

• Judge as NG if an attempt to write to EEPROM area failed.

Diagnosis 2

• Judge the malfunction in EEPROM area of the TCM.

• Judge as malfunction when the consistency in the EEPROM area is lost.

2. EXECUTION CONDITION

Secondary Parameters	Execution condition
Diagnosis 1
12 V battery system voltage	≥ 9 V
Diagnosis 2
12 V battery system voltage	≥ 9 V

3. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria	Threshold Value
Diagnosis 1
Writing-check (EEPROM)	Error
Diagnosis 2
Checksum (EEPROM)	Error

Time Needed for Diagnosis: Immediately

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

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