OBDII Code List

P1229 TOYOTA - Fuel System Over Pressure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Defective fuel pressure regulator
  • Fuel pressure regulator stuck open
  • Faulty wiring/fuel pump wiring
  • Faulty Engine Control Module (ECM)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1229 Toyota Description

Fuel must come through lines at an ideal pressure to keep your engine running properly. A fault in the system can cause for the system to over fuel and increase pressure beyond the ideal range. The fuel system on your Toyota is controlled by the fuel pressure regulator and most problems with over fueling will come from this part, or wiring to it. When there is a problem with pressure in the system, a trouble code from the vehicle's Engine Control Module (ECM) is stored; when the problem is too much pressure, the dashboard will illuminate the SES or check engine light to indicate that code P1229 has been stored in your vehicle's ECM.
OBDII Code P1229 Toyota - Fuel System Over Pressure -

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P1229 TOYOTA Comments

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