P233E: Fuel Pressure Regulator B Solenoid Supply Voltage Control Circuit Low
Standardized SAE J2012 code · P23xx — Ignition system and misfire
What does P233E mean?
The supply line that powers the solenoid of fuel pressure regulator B is below the expected voltage with the regulator commanded active - typically a high-resistance feed, partial short to ground or weak relay contact.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
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
Common causes
- High Supply feed has high contact resistance
- Medium Partial short to ground on supply line
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P233E on the same make and model first.
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