Engine-CodesInfiniti – P1229 Infiniti

P1229 Infiniti Code - Sensor Power Supply Circuit Shorted

Quick Answer

The P1229 Infiniti code indicates that there is a short circuit in the sensor power supply circuit. Common causes include Damaged wiring or connectors in the sensor power supply circuit, A blown fuse or faulty relay in the circuit, Corrosion or moisture in the sensor power supply circuit. 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 Infiniti indicates Sensor Power Supply Circuit Shorted.
Common causes
Common causes include Damaged wiring or connectors in the sensor power supply circuit, A blown fuse or faulty relay in the circuit, Corrosion or moisture in the sensor power supply circuit.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1229 Infiniti Description

The P1229 Infiniti code indicates that there is a short circuit in the sensor power supply circuit. This means that there is an issue with the electrical system that supplies power to the sensors in the vehicle. Sensors play a crucial role in the proper functioning of various systems in the vehicle, such as the engine management system, emissions control system, and transmission system. When the sensor power supply circuit is shorted, it can lead to incorrect sensor readings, which can cause the vehicle to run poorly, decrease fuel efficiency, and potentially lead to engine damage if not addressed promptly.

OBDII Code P1229 Infiniti - Sensor Power Supply Circuit Shorted
P1229 Infiniti Code - Sensor Power Supply Circuit Shorted

Common Causes of P1229 Infiniti

  1. Damaged wiring or connectors in the sensor power supply circuit.
  2. A blown fuse or faulty relay in the circuit.
  3. Corrosion or moisture in the sensor power supply circuit.
  4. Short circuit caused by external factors, such as water intrusion or physical damage.
  5. Malfunctioning sensors drawing excessive current through the circuit.

Symptoms of P1229 Infiniti

  1. Check engine light illuminated on the dashboard.
  2. Poor engine performance, such as rough idling or stalling.
  3. Decreased fuel efficiency.
  4. Difficulty starting the vehicle.
  5. Loss of power while driving.

How to Fix P1229 Infiniti

  1. Diagnose the issue by using a multimeter to test the continuity and voltage levels in the sensor power supply circuit.
  2. Inspect the wiring, connectors, fuses, and relays for any visible damage or corrosion.
  3. Repair or replace any damaged components, such as wiring or connectors.
  4. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to identify the root cause of the short circuit.

Cost to Fix P1229 Infiniti

The typical repair costs for addressing a P1229 Infiniti code can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as location, vehicle make and model, and engine type. It's important to note that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. To get an accurate estimate, it's recommended to consult with local auto repair shops.

Tech Notes for P1229 Infiniti

Start by inspecting the connections of the harness to the body grounds.

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Information for Specific Infiniti Models

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.

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