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
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References
sae:J2012