Code result
P233F
Fuel Pressure Regulator B Solenoid Supply Voltage Control Circuit High
Moderate severity
What it means
Same as P233D but with the supply line shorted to a higher potential than expected, so the ECU measures more voltage on the regulator B feed than the commanded level allows.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Supply line shorted to a higher voltage rail
highOne of the most commonly reported causes for this code — check this first.
Supply relay contact welded closed
lowLess common, but worth ruling out after the more likely causes.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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