P0090 Diagnostic Trouble Code Discussion for June 2025
Fuel Rail Pressure Regulator Control Circuit Malfunction
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| Help Request | Posted | |
| 2008 Chevrolet C5500 Kodiak C5E042 6.6L No Start, Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GBE5E1978 P0090: fuel pressure regulator control circuit fault. intermittent P0090 on this wreckeer. I believe either the regulator's driver in the ECM (Bosch 154 pin 0 986 288 002) or the pump's regulator itself is overheating after several minutes of vehicle operation. it can idle for a while fine, but within 5 mintu... |
June 21, 2025 | |
| 2011 Volkswagen Jetta TDI Highline 2.0L No Start, MIL Lamp on, glow plug light on P0090: N290fuel meterin valve open circuit. Changed fuel filter under hood, no metal particles in bottom. replaced in tank pump with used unit OE part. changed the relay under hood that powers fuse 21,22,23,24,also13,14,15 . Also has code P0045 boost solenoid.I have access to shop pro Snap On versio... |
June 26, 2025 |
