AutoCodes – Nissan – P1229 2008 Nissan Maxima

P1229 2008 Nissan Maxima Code - Sensor Power Supply Circuit Shorted

Quick Answer

The Engine Control Module (ECM) detects the voltage of the power source for the sensor is excessively low or high. Common causes include Check harness body ground, Faulty Accelerator Pedal Position (APP) sensor, Faulty Power Steering Pressure (PSP) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1229 2008 Nissan Maxima indicates Sensor Power Supply Circuit Shorted.
Common causes: Common causes include Check harness body ground, Faulty Accelerator Pedal Position (APP) sensor, Faulty Power Steering Pressure (PSP) sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,591

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 05, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1229 2008 Nissan Maxima Description

The Engine Control Module (ECM) detects the voltage of the power source for the sensor is excessively low or high. The ECM stops the electric throttle control actuator control, and the throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the voltage of the power source for the sensor is excessively low or high.

OBDII Code P1229 2008 Nissan Maxima - Sensor Power Supply Circuit Shorted - AutoCodes.com — P1229 2008 Nissan Maxima Code - Sensor Power Supply Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P1229 2008 Nissan Maxima?

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

How to Fix the DTC P1229 2008 Nissan Maxima?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Start 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1229 2008 Nissan Maxima code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1229 2008 Nissan Maxima code?

Need more information on how to fix the P1229 2008 Nissan Maxima code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1229 2008 Nissan Maxima Code

1. What are the common symptoms of OBDII code P1229 in a 2008 Nissan Maxima?

The common symptoms of OBDII code P1229 in a 2008 Nissan Maxima include engine performance issues, rough idling, and decreased fuel efficiency.

2. What does the OBDII code P1229 "Sensor Power Supply Circuit Shorted" mean in a 2008 Nissan Maxima?

The OBDII code P1229 in a 2008 Nissan Maxima indicates that the sensor power supply circuit has a shorted connection, potentially affecting the engine's performance.

3. What are the possible causes of OBDII code P1229 in a 2008 Nissan Maxima?

Possible causes of OBDII code P1229 in a 2008 Nissan Maxima include a faulty sensor, damaged wiring or connectors, or a problem with the engine control module (ECM).

4. How can I diagnose the OBDII code P1229 in my 2008 Nissan Maxima?

Diagnosing OBDII code P1229 in a 2008 Nissan Maxima involves using an OBDII scanner to retrieve the specific fault code, inspecting sensor wiring and connectors for damage, and testing the sensor's functionality.

5. Can I still drive my 2008 Nissan Maxima with OBDII code P1229?

It is not recommended to drive your 2008 Nissan Maxima with OBDII code P1229, as it can lead to further damage to the engine or affect the vehicle's performance and fuel efficiency.

6. How do I repair OBDII code P1229 in my 2008 Nissan Maxima?

Repairing OBDII code P1229 in a 2008 Nissan Maxima involves identifying and fixing the root cause of the shorted sensor power supply circuit, which may require replacing a faulty sensor, repairing damaged wiring, or addressing ECM issues.

7. Is it possible to reset the OBDII code P1229 in a 2008 Nissan Maxima without fixing the issue?

While you can reset the OBDII code P1229 in a 2008 Nissan Maxima using an OBDII scanner, it is crucial to address the underlying problem causing the code to prevent future issues.

8. How much does it cost to repair OBDII code P1229 in a 2008 Nissan Maxima?

The cost to repair OBDII code P1229 in a 2008 Nissan Maxima can vary depending on the specific issue causing the code, the parts needed for repair, and labor costs. It is recommended to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1229 in a 2008 Nissan Maxima?

While some DIY enthusiasts may be able to diagnose and repair OBDII code P1229 in a 2008 Nissan Maxima, it is recommended to have a professional mechanic perform the repair to ensure proper diagnosis and fix.

10. How long does it take to repair OBDII code P1229 in a 2008 Nissan Maxima?

The time taken to repair OBDII code P1229 in a 2008 Nissan Maxima can vary depending on the extent of the issue and the availability of parts. It is advisable to consult a mechanic for a more accurate estimate of the repair time.