Toyota Camry
U0100
The U0100 code indicates a "Lost Communication with ECM/PCM 'A'" fault in a 2018-present Toyota Camry (Eighth Generation), suggesting that the vehicle's Engine Control Module (ECM) or Powertrain Control Module (PCM) is not communicating properly with other control modules.
29 SolutionsU-CodeNetwork
U
Error Code Type
Network
Components
2 affected
ElectricalTransmission
Symptoms
10 common
- •Check engine light illuminated
- •Engine may not start or has difficulty starting
- •Erratic or poor engine performance
- +7 more
Most Affected Generations
3 generations
XV70
15
XV80
10
XV50
4
Top Affected Components
2 components
Electrical
26
Transmission
3
Severity Levels
1 level
high
29
Quick Facts
29
Total Solutions
2
Affected Components
10
Common Symptoms
3
Generations
All Solutions
Showing 29 of 29 solutions for error code U0100 across all generations.