P1229 2008 NISSAN MAXIMA - Sensor Power Supply Circuit Shorted
- Check harness body ground
- Faulty Accelerator Pedal Position (APP) sensor
- Faulty Power Steering Pressure (PSP) sensor
- Faulty Refrigerant Pressure sensor
- Faulty EVAP Control System Pressure sensor
Tech notesStart by inspecting the connections of the harness to the body grounds.
You can try to clean the throttle body first before replacing anything. After clean or replacing the throttle body you will have to do an Idle Air Relearn and Throttle Valve Closed Position Learning
Idle Air Relearn
Throttle Valve Closed Position Learning
When is the code detected?The Engine Control Module (ECM) detects a voltage of power source for sensor is excessively low or high.
When the malfunction is detected, ECM enters fail-safe mode.
- Engine Light ON (or Service Engine Soon Warning Light)
P1229 2008 Nissan Maxima DescriptionThe Engine Control Module (ECM) detects a voltage of power source for sensor is excessively low or high. ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
Need more help?Get the P1229 2008 Nissan Maxima code diagnosed by a professional: Find a repair shop in your area
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