P1AFA on 2020-2025 Mercedes-Benz GLE (GLE 350, GLE 450 4MATIC, GLE 450d, GLE 580, AMG GLE 53) — Quick Charger READY Time-Out
1 vehicles · 1 makes · $800-$4,500 repair
How to diagnose and fix P1AFA: 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.
Mercedes-Benz GLE · 2020–2025
GLE models equipped with the EQ Boost 48-volt mild-hybrid system (GLE 350, GLE 450, GLE 450d, GLE 580 and AMG variants on the W167 platform) commonly trigger a '48V Battery Malfunction' or 'Hybrid System Error' warning. The integrated starter-generator (ISG) and 48V lithium-ion battery, along with the DC/DC converter, are known weak points. Owners report sudden loss of drive power on the motorway, disabled stop/start, weak acceleration and repeated stalling, sometimes resolving only after the car is powered down for 10-15 minutes. A March 2022 Mercedes TSB acknowledged that the battery self-test can disconnect the 48V battery due to software, hardware, cooling or false-positive faults. Many owners report multiple unsuccessful dealer visits and weeks of downtime, with the fault often persisting under warranty.
Common Symptoms
- 48V Battery Malfunction warning
- Hybrid System Error message
- sudden loss of power while driving
- weak acceleration
- stop/start disabled
- engine stalls and restarts after waiting
- noisy auxiliary fan
How to Fix
Have the dealer perform Xentry diagnostics and apply the latest 48V/ISG control-unit software update first, as many cases are false-positive disconnects fixed in software. Persistent faults require replacement of the 48V battery, the integrated starter-generator (ISG/alternator unit), or the DC/DC converter. Check the 48V ground cable connection (subject of a separate recall) before condemning the battery. Repairs are typically covered under the powertrain/hybrid warranty; out of warranty an ISG replacement is a major job.
Sources for this issue (3)
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P1AFA code reference
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Frequently asked questions
What does P1AFA mean?
P1AFA stands for "Quick Charger READY Time-Out." P1AFA is a manufacturer-specific code used on the Mitsubishi i-MiEV electric vehicle (and its platform twins, the Citroën C-Zero and Peugeot iOn) for the DC quick-charging (CHAdeMO) system. It sets when the quick charger's present output voltage stays at or below 200 V for 10 seconds or longer, meaning the external DC fast charger failed to reach its READY state. The result is that the vehicle cannot complete a DC fast charge, though normal (AC) driving and onboard charging are typically unaffected.
What are the most common causes of P1AFA?
The most common causes of P1AFA are: Malfunction of the external DC quick charger (CHAdeMO station) itself, Faulty or dirty quick-charge connector or charge-port contacts on the vehicle, Damaged or high-resistance quick-charge cable / communication wiring between charger and vehicle, CHAdeMO communication (CAN) handshake fault between charger and the vehicle's EV-ECU/battery management system, Quick charger output voltage too low or charger not compatible with the vehicle's high-voltage battery, Fault in the vehicle's quick-charge contactor circuit or charge control module. The specific cause varies by vehicle.
How much does it cost to fix P1AFA?
Repair costs for P1AFA range from $800 to $4,500, depending on the vehicle and root cause.
Which vehicles are affected by P1AFA?
Au7o has documented P1AFA across 1 vehicle models from 1 manufacturers: Mercedes-Benz.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.