Choose your make or find the warning shown on your car. Each guide explains what the message can mean, what information is useful and when to ask for help. If you do not know which module is fitted, start with the vehicle finder.
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Hyundai and Kia · BMW and MINI · Tesla · Peugeot, Vauxhall, Citroen and DS · Audi · Nissan and Porsche · Volvo, Polestar and MG · Ford, Jaguar and Fiat · Volkswagen Group electrical faults · ZF hybrid transmissions · Networks and module memory
Need a repair? Choose a service or tell us what has gone wrong. For ECU testing, suitable remapping and garage file enquiries, see calibration and software support. We will confirm the work and cost before booking or sending parts.
Hyundai and Kia charging and hybrid electrics
- Hyundai IONIQ 5, IONIQ 6 and Kia EV6 P1A9096 charging warnings
- Kia Niro C182C00 and interrupted AC charging
- Hyundai IONIQ 5 V2L stops supplying power or reports conditions not met
- Kia hybrid 12V Battery Reset and recurring power loss
BMW and MINI charging and programming
- BMW i3 charging failure and the difference between KLE and EME
- BMW i3 REx KLE learning and charging faults after replacement
- BMW and MINI Plug and Charge problems before an onboard charger is blamed
Tesla Model 3 charging and isolation alerts
- Tesla Model 3 CP_a004 and CP_a010 charging equipment alerts
- Tesla Model 3 BMS_a035 and BMS_a123 isolation warnings
- Tesla Model 3 BMS_a074 and BMS_a079 reduced charge-limit alerts
- CP_a054 and CP_a079 charge-port latch alerts
- CP_a066 when the charger will not start
Peugeot, Vauxhall, Citroen and DS electric vehicles
Audi hybrid charging and transmission control
- Audi Q7 e-tron P33E100 and a charging cable still detected
- Audi P173500 and P173600 clutch-position faults on 0GC and 0DL
- Audi P176A00 to P176D00 gear-selector regulation faults
Nissan LEAF, ARIYA and Porsche Taycan
- 2013 Nissan LEAF B29C1 and PDM software information
- Porsche Taycan onboard-charger identification before a repair quote
- Nissan LEAF e-Pedal system failure and the information a workshop needs
- ARIYA slow rapid charging in cold weather
- ARIYA power limitation and reduced-power warnings
Volvo, Polestar and MG electric vehicles
- Volvo EX30 charging lights and when a warning needs assessment
- Volvo Plug and Charge stops working after a workshop visit
- Polestar 2 red charging light and a cable that will not release
- Polestar 2 portable charging slows or stops when the plug gets hot
- MG4 EV charging warning and motor warning need different enquiries
Ford, Jaguar and Fiat body electronics
- Ford Ranger 2011 to 2015 U1000 and U3000 BCM enquiries
- Jaguar XF X250 front and rear BCM identification with U3000-49
- Fiat 500X headlamp warning when the lights still work
Volkswagen Group ECU, gearbox and body electrics
- P068A on a Volkswagen or Audi and an ECU that loses its supply too early
- P06A3 and the sensor reference circuit before an ECU is condemned
- VAG 00457 and missing communication with J519 body electronics
- 01299 and the J533 gateway
- 00885 and a starter that does not turn
- 01044 after a module or coding change
- 01315 and the gearbox controller
ZF hybrid transmission electronics
Networks and module memory
- FlexRay faults and the difference from CAN
- 93-series EEPROM reads in x8 and x16
- EEPROM error correction and a successful read
Tell us about the problem
Include the make, model, year, exact variant, full fault codes, symptoms and previous work. Add a diagnostic report and a readable module label if already safely available. Tell us whether you are an owner or a garage and whether you need a vehicle appointment or a postal module assessment.
Do not remove high-voltage components or restraint devices just to identify them. Do not send traction batteries or pyrotechnic parts as ordinary parcels. Follow the vehicle warnings and arrange appropriate recovery where required.
Local workshop and UK postal enquiries
AXION Automotive is at Unit 2, Long Wittenham Rd, Didcot, Oxfordshire, OX11 9BH. Workshop visits are by arrangement. Owners and garages elsewhere in the UK can enquire about suitable postal module work, with acceptance confirmed before dispatch.
Contact AXION · View repair services · Call 07440 134303
About these guides
The guides link to manufacturer information and published technical references so you can check the details. Read the instructions for your exact vehicle. A bulletin from another country does not confirm UK recall or warranty cover. For help with your own car, send us the symptoms and any report you already have.