Engine-CodesNissan – P1229 Nissan

P1229 Nissan Code - Sensor Power Supply Circuit Shorted

Quick Answer

The P1229 Nissan code indicates a problem with the sensor power supply circuit being shorted. Common causes include Damaged wiring or connectors in the sensor power supply circuit, Faulty sensor, Problem with the engine control module. 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 Nissan indicates Sensor Power Supply Circuit Shorted.
Common causes
Common causes include Damaged wiring or connectors in the sensor power supply circuit, Faulty sensor, Problem with the engine control module.
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 07, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P1229 Nissan Description

The P1229 Nissan code indicates a problem with the sensor power supply circuit being shorted. This means that there is a malfunction in the electrical system that is responsible for supplying power to sensors within the vehicle. Sensors play a crucial role in monitoring various systems in the vehicle, such as engine performance, emissions, and overall operation. When the sensor power supply circuit is shorted, it can lead to inaccurate readings from sensors, which can impact the vehicle's performance and efficiency.

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

Common Causes of P1229 Nissan

  1. Damaged wiring or connectors in the sensor power supply circuit
  2. Faulty sensor
  3. Problem with the engine control module
  4. Corrosion in the electrical connections
  5. Short circuit in the sensor power supply circuit

Symptoms of P1229 Nissan

  1. Engine running rough or stalling
  2. Decreased fuel efficiency
  3. Issues with starting or idling
  4. Check Engine light illuminated
  5. Inaccurate sensor readings

How to Fix P1229 Nissan

  1. Begin by performing a thorough inspection of the sensor power supply circuit, checking for any damaged wiring or connectors.
  2. Test the sensors to determine if any of them are faulty and need to be replaced.
  3. Check the engine control module for any signs of damage or malfunctions.
  4. Repair or replace any damaged components, such as wiring, connectors, sensors, or the engine control module.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1229 Nissan

The typical repair costs for resolving a P1229 Nissan code can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

Tech Notes for P1229 Nissan

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

Need more information about the P1229 Nissan code?

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

Need Help with the Code?

Get the P1229 Nissan code diagnosed by a professional: Find a repair shop in your area

Information for Specific Nissan 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.

Frequently Asked Questions about P1229 Nissan Code

1. What does the OBDII code P1229 mean on a Nissan?

P1229 indicates a "Sensor Power Supply Circuit Shorted," meaning there is an electrical issue in the circuit that powers certain engine sensors.

2. What are the common symptoms of code P1229 on a Nissan?

Symptoms can include poor engine performance, reduced power, stalling, or the engine failing to start, along with the illumination of the check engine light.

3. What causes the P1229 code to trigger on a Nissan?

Common causes include a short circuit in the sensor power supply wiring, damaged or corroded connectors, or a faulty sensor drawing excessive power.

4. Which sensors are affected by the P1229 code?

This code typically involves sensors that rely on the vehicle's 5-volt reference power supply, such as the throttle position sensor or mass airflow sensor.

5. How do you diagnose the P1229 code on a Nissan?

Diagnosis involves checking the sensor power supply wiring for shorts, inspecting connectors for damage, and testing sensors for proper operation and voltage.

6. Can I drive my Nissan with the P1229 code active?

Driving with this code is not recommended, as it can cause erratic engine behavior and potentially damage other components.

7. How do you fix the P1229 code on a Nissan?

Repairs may include fixing damaged wiring, cleaning or replacing corroded connectors, or replacing a faulty sensor.

8. How much does it cost to repair a P1229 code on a Nissan?

Repair costs can vary widely depending on the issue but typically range from $50 for simple wiring repairs to $300 or more for sensor replacement.

9. Can a dead battery cause the P1229 code on a Nissan?

A dead or weak battery is unlikely to directly cause this code, but electrical issues, such as voltage irregularities, could contribute to sensor power supply problems.

10. Will clearing the code fix the P1229 issue on my Nissan?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

Discuss the causes and fixes for P1229 Nissan OBDII Code

  • I HAVE NISSAN PATROL 2015 Y61 SAME THIS CODE P1229 ..

    HOW CAN FIX ? TRY ground same problem

  • I have Nissan pathfinder 2002 model it can't accelerate,what is the cause?

  • Unfortunately, there are many things that can cause that problem. Are there any other symptoms or codes besides the P1229 code and poor acceleration? have you done any work on your vehicle lately?

  • when checked on computer it gives P1229 code and poor acceleration. Apart suddenly engine light indication appears and accelerator stop working please advise.