AutoCodesInfiniti – P0229 2003 Infiniti G35

P0229 2003 Infiniti G35 Code - Accelerator Pedal Position Sensor 1 Circuit High Input

Quick Answer

The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Throttle Position Sensor (TPS), Throttle Position Sensor (TPS) harness is open or shorted, Throttle Position Sensor (TPS) circuit poor electrical connection. 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
P0229 2003 Infiniti G35 indicates Accelerator Pedal Position Sensor 1 Circuit High Input.
Common causes
Common causes include Faulty Throttle Position Sensor (TPS), Throttle Position Sensor (TPS) harness is open or shorted, Throttle Position Sensor (TPS) circuit poor electrical connection.
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 4,563
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 29, 2024
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Code P0229 2003 Infiniti G35 Description

The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelerator
position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
OBDII Code P0229 2003 Infiniti G35 - Accelerator Pedal Position Sensor 1 Circuit High Input - AutoCodes.com
P0229 2003 Infiniti G35 Code - Accelerator Pedal Position Sensor 1 Circuit High Input

What are the Possible Causes of the DTC P0229 2003 Infiniti G35?

  • Faulty Throttle Position Sensor (TPS)
  • Throttle Position Sensor (TPS) harness is open or shorted
  • Throttle Position Sensor (TPS) circuit poor electrical connection

How to Fix the DTC P0229 2003 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0229 2003 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.

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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 P0229 2003 Infiniti G35 Code

1. What does the OBDII code P0229 mean on a 2003 Infiniti G35?

P0229 indicates an issue with the Accelerator Pedal Position Sensor 1 Circuit, specifically a high input signal being detected by the Engine Control Module (ECM).

2. What are the common symptoms of code P0229 in a 2003 Infiniti G35?

Symptoms may include poor throttle response, reduced engine power, hesitation during acceleration, and the Check Engine Light illuminating.

3. What causes the P0229 code in a 2003 Infiniti G35?

Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning ECM.

4. Can I drive my 2003 Infiniti G35 with a P0229 code?

While the car may still run, driving with this code can lead to unsafe throttle behavior and should be diagnosed and repaired promptly.

5. How do I fix the P0229 code on my 2003 Infiniti G35?

Repairs may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

6. How do I know if the accelerator pedal position sensor is faulty?

A faulty sensor may cause erratic throttle behavior, hesitation, or a failure to accelerate properly. Testing the sensor’s voltage and resistance can help confirm the issue.

7. What tools do I need to diagnose and fix the P0229 code?

You’ll need an OBDII scanner, multimeter, and possibly basic hand tools to inspect and test the wiring and connectors associated with the sensor.

8. How much does it cost to repair a P0229 code on a 2003 Infiniti G35?

Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether the sensor or wiring needs replacement.

9. Can a dirty throttle body cause a P0229 code?

While not a direct cause, a dirty throttle body can contribute to poor throttle response, which may be mistaken for pedal sensor issues. Cleaning it can help rule out other problems.

10. Does the P0229 code require ECM replacement?

ECM replacement is rare and usually only necessary if all other components, such as the sensor and wiring, have been ruled out and the ECM is confirmed to be defective.

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