U1817
Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus
DTC U1817, sometimes indicated as U181700 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle user network.
- U1817 00: Lost Communication with Hybrid Powertrain Control Module on Powertrain Expansion Communication Bus
See Also: Related Error Codes
2019 RAM 1500 with 24000.0 miles
Speedometer and entire instrument cluster stopped working, wipers started working, transmission would not shift. Message on cluster stated to get where you're going and don't turn engine off or it may not restart. Driveability was greatly reduced, power steering seemed to be less effective. Error and warning messages from all the electronic modules flashed on the driver display in sequence. Dealer starr motors of suffolk, virginia indicated that without an active condition they cannot troubleshoot and repair so they sent us back out on the road with this vehicle. Error code U1817 is displayed as a non-active historical diagnostic trouble code. Hitting a bump in the road seemed to trigger momentary return of cluster functionality, with a return to non-functionality shortly thereafter.
POWER TRAIN, VISIBILITY/WIPER STEERING POWER TRAIN STEERING VISIBILITY/WIPER