AutoCodes – Infiniti – P1229 2005 Infiniti G35

P1229 2005 Infiniti G35 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 2005 Infiniti G35 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 3,764

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 2005 Infiniti G35 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 2005 Infiniti G35 - Sensor Power Supply Circuit Shorted - AutoCodes.com — P1229 2005 Infiniti G35 Code - Sensor Power Supply Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC P1229 2005 Infiniti G35?

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 2005 Infiniti G35?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1229 2005 Infiniti G35 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 2005 Infiniti G35 code?

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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 2005 Infiniti G35 Code

What does the OBDII code P1229 mean for my 2005 Infiniti G35?

P1229 indicates a problem with the sensor power supply circuit, specifically that there is a short circuit affecting the sensor's power supply.

What symptoms might I experience if my Infiniti G35 has code P1229?

You may notice issues such as poor engine performance, reduced fuel efficiency, illumination of the check engine light, or the vehicle may enter limp mode.

What could cause the P1229 code to trigger in my G35?

Common causes include a short circuit in the wiring harness, a faulty sensor, or issues with the engine control module (ECM) affecting the power supply.

How can I diagnose the issue behind code P1229?

Start by visually inspecting the wiring and connectors associated with the affected sensor for any signs of damage or corrosion, then use a multimeter to test for continuity and proper voltage.

What is the most common repair for code P1229?

The most common repair involves repairing or replacing damaged wiring or connectors in the sensor power supply circuit, and if necessary, replacing the faulty sensor itself.

Can I drive my car with the P1229 code?

While it may be possible to drive the vehicle, it is not recommended as it could lead to further damage or degraded performance.

How much will it cost to fix the P1229 code?

Repair costs can vary widely, typically ranging from $100 to $500 depending on whether wiring repairs, sensor replacements, or ECM issues are involved.

Will clearing the code fix my Infiniti G35?

Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the code will likely return.

Is there a risk of further damage if I ignore the P1229 code?

Yes, ignoring the P1229 code can result in more serious issues, including engine damage or failure, as well as increased emissions and potential safety concerns.