OBD-II code · Network
U016C Lost Communication With Fuel Pump Control Module B
ECU lost CAN communication with fuel pump control module B. 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.
Is it safe to drive with U016C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Pump Module B, Can Bus
Related codes
- U0169Lost Communication with Sun Roof Control Module
- U016ALost Communication With Global Positioning System Module
- U016BLost Communication With A/C Compressor Control Module
- U016DLost Communication With Exhaust Gas Sensor Module B
- U0170Lost Communication with Restraints Front Sensor "B"
- U0171Lost Communication with Restraints Rear Sensor "A"
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.