OBD-II code · Network
U0625 Lost Communication With Fuel Rail Pressure Sensor Bank 1
The vehicle bus reports loss of communication with smart fuel rail pressure sensor on bank 1. The high-pressure fuel control loop loses its actual feedback; injection switches to a fail-safe map.
Is it safe to drive with U0625?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyBus wiring open or shorted
- PossibleModule without power or ground
- PossibleModule failed
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Rail Pressure Sensor Bank 1, Vehicle Bus Wiring
Related codes
- U0665Lost Communication With Fuel Rail Pressure Sensor Bank 2
- U0622Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 2
- U0623Lost Communication With Coolant Pump A
- U0624Lost Communication With Coolant Pump B
- U0626Lost Communication With A/C Refrigerant Pressure Sensor A
- U0627Lost Communication With A/C Refrigerant Temperature Sensor A
- U0628Lost Communication With A/C Refrigerant Pressure Sensor B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.