What it means
The fuel rail pressure sensor circuit for Bank 2 is not performing within its expected range. The code alone does not identify whether the cause is the sensor, its circuit, or another pressure-related condition.
At a glance
- Usually lights the check-engine light
- Affects emissions; the car can fail an emissions test
- The engine or gearbox may go into limp mode
How it works
The fuel rail pressure sensor on bank 2 reports rail pressure to the control module as an electrical signal. This range/performance code sets when that signal or the pressure it represents does not behave as expected for operating conditions; the code alone cannot distinguish a drifting sensor from a circuit fault or a real pressure issue.
Common causes
Most likely first.
- Sensor reading drifted
- Sensor element aged beyond calibration window
- Sensor mounting loose - signal damping
Symptoms
- Check engine light on
- Hard starting or extended cranking
- Rough or uneven running
- Reduced engine power
How to diagnose it
- Record freeze-frame data and compare bank 2's reported rail pressure with commanded pressure at the time the fault occurred.
- Check live bank 2 pressure data during starting and running, comparing it with bank 1 data if available and with the manufacturer's expected behavior.
- Inspect the bank 2 pressure sensor mounting, connector, and harness for looseness, corrosion, damage, or poor terminal contact.
- Check the fuel system for other pressure-related codes and symptoms before assuming the bank 2 sensor itself is at fault.
- Test the bank 2 sensor signal and wiring, then verify actual fuel pressure using the vehicle's specified procedure if scan data remains implausible.
Common fixes
- Secure a loose bank 2 sensor mounting or connector.
- Clean serviceable terminals and repair damaged wiring at the bank 2 sensor.
- Replace the bank 2 fuel rail pressure sensor if its signal drifts outside the manufacturer's specification.
- Repair a confirmed fuel-pressure fault if measured pressure does not match the commanded pressure.
Can I keep driving?
Because this fault can accompany hard starting, rough running, or reduced power, avoid heavy loads and stop if the engine stalls or loses substantial power. Have persistent fuel-pressure problems checked before relying on the vehicle for a long trip.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.