P31CF on Audi
Charge Cover A Recognition - Cover Locking
P31CF on Audi vehicles indicates charge cover a recognition - cover locking. Au7o has documented this code across 1 Audi model — most commonly on e-tron. The onboard charger cannot correctly recognise the state of charge cover A's locking mechanism - the module's read of whether the charge flap/cover is locked or unlocked does not agree with the commanded state or the sensor feedback. Because the charger will not energise a socket whose cover state it cannot verify, this blocks or interrupts charging. Audi TSB 2061788 lists DTC P31CF00 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback with onboard-charger software level 0070.
Common Causes of P31CF
- •Outdated onboard-charger software (level 0070) - Audi's remedy is the OBC software update per TSB 2061788
- •Faulty charge-cover locking actuator or its position feedback
- •Moisture or corrosion in the charge-door connector affecting LIN feedback
- •Charge flap mechanically obstructed, iced, or misaligned
P31CF on Audi by Model
Audi e-tron(1 issue)
- 2021 e-tron Charging Interruptions with Onboard-Charger Software 0070 - Diagnosis Required2021
Audi TSB 2061788/2 covers model-year 2021 e-tron quattro and e-tron Sportback vehicles with specified AC/DC charging interruptions, charging-flap operation problems, or an app request for auxiliary heating that does not pre-heat the vehicle when matching DTCs are stored in high-voltage battery charger control module J1050. Audi attributes the documented condition to onboard-charger software and identifies old software level 0070, not a proven failed charger module.
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View P31CF across all makes →Frequently Asked Questions
What does P31CF mean on Audi?▼
P31CF stands for "Charge Cover A Recognition - Cover Locking." The onboard charger cannot correctly recognise the state of charge cover A's locking mechanism - the module's read of whether the charge flap/cover is locked or unlocked does not agree with the commanded state or the sensor feedback. Because the charger will not energise a socket whose cover state it cannot verify, this blocks or interrupts charging. Audi TSB 2061788 lists DTC P31CF00 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback with onboard-charger software level 0070. On Audi specifically, this code is documented across 1 model.
What causes P31CF on Audi vehicles?▼
Common causes on Audi: Outdated onboard-charger software (level 0070) - Audi's remedy is the OBC software update per TSB 2061788, Faulty charge-cover locking actuator or its position feedback, Moisture or corrosion in the charge-door connector affecting LIN feedback, Charge flap mechanically obstructed, iced, or misaligned. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P31CF on a Audi?▼
Repair costs vary widely depending on the root cause and specific Audi model.
Which Audi models have P31CF documented?▼
Au7o has documented P31CF on 1 Audi model: e-tron.