P062F: How to Diagnose & Fix — Internal Control Module EEPROM Error
2 vehicles · 2 makes
How to diagnose and fix P062F: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Toyota Highlander · 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.
Common Symptoms
- Engine stalls while driving, sometimes at speed
- Long crank / hard starting
- Rough idle or hesitation
- Illuminated check engine light
- Engine fails to restart after stalling
- Fuel system warning indicators
How to Fix
Under recall 20V-012 (and related expansions), Toyota dealers replace the low-pressure fuel pump assembly with an improved-impeller unit free of charge. Owners should run their VIN at nhtsa.gov or contact Toyota; vehicles showing stalling/hard-start symptoms before the pump is replaced should be inspected promptly.
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Open Toyota dealer map in Google Maps ↗Call to confirm they service Toyota vehicles and check your VIN, recall eligibility, parts availability, and appointment options.
Sources for this issue (3)
Honda Civic · 2019–2020
Certain Civics use a Denso in-tank fuel-pump module whose impeller was molded from improper-density resin. The impeller absorbs fuel, swells and deforms, then binds against the pump housing and stops spinning. Result: the fuel pump fails without warning and the engine stalls or won't start — a stall at speed risks loss of power steering/brakes and a crash. This is the low-density-impeller Denso recall (NHTSA 23V-858, part of Honda's multi-million-unit Denso pump campaign), separate from the high-pressure-fuel-pump crack/fire recall. Honda dealers inspect and replace the defective pump module free.
Common Symptoms
- Engine stalls while driving with no warning
- Hard start or extended cranking, especially when hot
- No-start condition
- Whining or no sound from fuel pump on key-on
- Check-engine light with low fuel-pressure codes
How to Fix
Check the VIN against recall 23V-858 and have the dealer replace the in-tank fuel pump module free under recall. If out of recall scope but symptomatic, replace the fuel pump module with the updated Denso part. Don't ignore long crank / stall events — failure is sudden.
Find a Honda dealer
Choose to share your location for this search, or enter an area below. Your search location is sent to Google to find dealers.
Open Honda dealer map in Google Maps ↗Call to confirm they service Honda vehicles and check your VIN, recall eligibility, parts availability, and appointment options.
Sources for this issue (3)
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P062F code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P062F mean?
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.
What are the most common causes of P062F?
The most common causes of P062F are: 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. The specific cause varies by vehicle.
How much does it cost to fix P062F?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P062F?
Au7o has documented P062F across 2 vehicle models from 2 manufacturers: Honda, Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.