P229D OBD-II: Fuel Pressure Regulator 2 Exceeded Learning Limits - Too High
P229D Severity
Should you fix P229D yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P229D?
The Fuel Pressure Regulator allows the fuel system to release excessive fuel in the fuel rail back to the fuel tank. When the engine control module (PCM) determines that the Fuel Pressure Regulator is not performing properly, the PCM will set code P229D.
Ask our experts about P229D.
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