P1229 2004 NISSAN MAXIMA Possible Causes
- Check the ground of the body harness
- Faulty Accelerator Pedal Position (APP) sensor
- Faulty Power Steering Pressure (PSP) sensor
- Faulty Refrigerant Pressure Sensor
- Faulty EVAP Control System Pressure Sensor
How to Fix Code P1229 2004 NISSAN MAXIMA?
Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Technical Notes
Begin by inspecting the harness connections to the body grounds.
You can try cleaning the throttle body before replacing anything. After cleaning or replacing the throttle body, you will need to perform an idle air relearn and throttle closed position learning.
When is the Code Detected?
The Engine Control Module (ECM) detects that the voltage from the power supply for the sensor is excessively low or high.
When the malfunction is detected, the ECM enters fail-safe mode.
Possible Symptoms
- Engine light on (or engine warning light soon on)
P1229 2004 NISSAN MAXIMA Meaning
The Engine Control Module (ECM) detects that the voltage from the power supply for the sensor is excessively low or high. The ECM stops controlling the electronic throttle control actuator, and the throttle valve is held at a fixed opening (about 5 degrees) by the return spring.