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2012 Toyota Tundra 5.7L No Start
truck will only start after five or six tries. truck will start when blue wire from fuel pump module to fuel pump is energized. the fuel pump relay has been swapped. my question is this a failure pattern or a bad fuel pump driver module.
FIX posted 8/1/2022
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Related Documents & Media | VIN | 5TFUY5F18C |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | No Start |
| Occurs | Intermittently |
Trouble Codes
| P1603 | PCM Internal Dual-Port Communication Failure |
| P1604 | PCM Internal Dual-Port Ram Read/Write Integrity Failure |
| P1605 | Loss Of HVAC Serial Data |
Message Closed w/FIX
Vehicle Data
2012 Toyota Tundra
| VIN | 5TFUY5F18C |
| Engine | 5.7 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | No Start |
| Occurs | Intermittently |
Trouble Codes
| P1603 | PCM Internal Dual-Port Communication Failure |
| P1604 | PCM Internal Dual-Port Ram Read/Write Integrity Failure |
| P1605 | Loss Of HVAC Serial Data |
Video