Network
generic / SAE
U020D
Lost Communication With Wireless Accessory Charging Module B
ECU lost communication with wireless accessory charging module B (Qi pad for phones). A communication loss with this module breaks any function relying on its data — diagnostic tools may show 'no response' and dependent modules can fall into limp mode.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 0D
Possible causes
- Module unpowered high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 40–400 €
- Estimated time: 0.3–2 h
- Component: wireless charging module b
- Component: can bus
- MIL / check engine light
Sources
References
sae:J2012