P228D
PPowertrainFuel Pressure Regulator 1 Pressure Too High
What does this code mean?
Severity : HighP228D means fuel pressure regulator 1 has exceeded its control limits with pressure too high. The engine control module can no longer bring fuel pressure, often common rail pressure, back down to the target value. Which component is called regulator 1 varies by manufacturer.
Symptoms
- Check engine light on.
- Loss of power or limp mode.
- Stalling or hard starting.
- Knocking or harsh running.
- Other fuel pressure codes may be stored.
Possible causes
- Faulty or sticking pressure regulator valve.
- Rail pressure sensor giving a false reading.
- Blocked or kinked fuel return line.
- Damaged regulator wiring or connector.
- Contaminated fuel.
Diagnosis and repair
- Compare desired and actual fuel pressure in live data.
- Inspect the regulator connector and wiring.
- Test the rail pressure sensor and its supply.
- Check the return circuit and fuel quality.
- Replace the faulty part, clear the code and road test.
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Code
P228D
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012