P062F on Toyota
Internal Control Module EEPROM Error
P062F on Toyota vehicles indicates internal control module eeprom error. Au7o has documented this code across 1 Toyota model — most commonly on Highlander. P062F sets when the ECM, TCM, or another control module detects a fault in its internal EEPROM (Electrically Erasable Programmable Read-Only Memory). The EEPROM stores calibration settings, learned/adaptive values, and software parameters; when the module's self-test finds this memory cannot be reliably read or written, it stores P062F. It is an internal module fault, not an external circuit issue.
Common Causes of P062F
- •Internal control module (ECM/TCM) hardware/memory failure
- •Corrupted EEPROM data from an interrupted or failed reflash
- •Voltage spikes or unstable power/ground to the module
- •Water intrusion or corrosion in the module
- •Aged module with degraded memory cells
P062F on Toyota by Model
Toyota Highlander(1 issue)
- Denso Low-Pressure Fuel Pump Failure Causing Engine Stalling (Recall 20V-012)2017-2019
Certain Highlanders are part of Toyota's large Denso low-pressure fuel pump recall (NHTSA 20V-012). The pump's resin impeller can absorb fuel, swell, and crack, causing the pump to seize. This leads to rough running, hard starting, and engine stalling — potentially at speed and without warning — creating a crash risk. The defect spans many Toyota/Lexus models; the Highlander was specifically named in the campaign.
Looking for P062F on a different make?
View P062F across all makes →Frequently Asked Questions
What does P062F mean on Toyota?▼
P062F stands for "Internal Control Module EEPROM Error." P062F sets when the ECM, TCM, or another control module detects a fault in its internal EEPROM (Electrically Erasable Programmable Read-Only Memory). The EEPROM stores calibration settings, learned/adaptive values, and software parameters; when the module's self-test finds this memory cannot be reliably read or written, it stores P062F. It is an internal module fault, not an external circuit issue. On Toyota specifically, this code is documented across 1 model.
What causes P062F on Toyota vehicles?▼
Common causes on Toyota: Internal control module (ECM/TCM) hardware/memory failure, Corrupted EEPROM data from an interrupted or failed reflash, Voltage spikes or unstable power/ground to the module, Water intrusion or corrosion in the module, Aged module with degraded memory cells. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P062F on a Toyota?▼
Repair costs vary widely depending on the root cause and specific Toyota model.
Which Toyota models have P062F documented?▼
Au7o has documented P062F on 1 Toyota model: Highlander.