Powertrain
generic / SAE
P0089
Fuel Pressure Regulator 1 Performance
The ECU detects that fuel rail pressure does not respond to commanded changes of the pressure regulator within expected dynamics. Indicates a sluggish or partially failed regulator.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / 89
Possible causes
- Regulator sluggish or partially blocked high
- Fuel contamination medium
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–1500 €
- Estimated time: 1.5–6 h
- Component: fuel pressure regulator
- Component: fuel rail
- Component: high pressure fuel pump
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012