Network
generic / SAE
U0108
Lost Communication With Alternative Fuel Control Module
The ECU has lost CAN communication with the alternative fuel control module (CNG/LPG/H2 systems). Either the module is not responding or the bus path is broken.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 08
Possible causes
- Module unpowered or fuse blown high
- CAN wiring to module broken medium
- Gateway module routing CAN messages incorrectly 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: medium
- DIY: possible
- Estimated cost: 50–1200 €
- Estimated time: 0.5–5 h
- Component: alt fuel module
- Component: can bus
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012