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2016 Toyota 4Runner SR5 4.0L No Start
I have the Code U100 multiple times. I have no check engine light, and I can't communicate with the PCM or the TCM. I have tried unplugging multiple sensors and have checked for the 5-volt reference, and I do have it. I have used two different scanners wit...
FIX posted 7/4/2025
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Related Documents & Media | VIN | JTEZU5JR3G |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | No Start |
| Occurs | Always |
Trouble Codes
| U0100 | Lost Communication With PCM |
Message Closed
Vehicle Data
2016 Toyota 4Runner SR5
| VIN | JTEZU5JR3G |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | No Start |
| Occurs | Always |
Trouble Codes
| U0100 | Lost Communication With PCM |
Video