P0123 2003 Infiniti G35 Code - Throttle Position Sensor/Switch '1' Circuit High Input
Quick Answer
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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
- P0123 2003 Infiniti G35 indicates Throttle Position Sensor/Switch '1' Circuit High Input.
- Common causes
- Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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.
Code P0123 2003 Infiniti G35 Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0123 2003 Infiniti G35?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
- Faulty accelerator pedal position sensor
How to Fix the DTC P0123 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 P0123 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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Frequently Asked Questions about P0123 2003 Infiniti G35 Code
1. What are the common symptoms of OBDII code P0123 on a 2003 Infiniti G35?
Symptoms may include issues with acceleration, stalling, poor fuel economy, and an illuminated Check Engine Light.
2. What causes the Throttle Position Sensor/Switch '1' Circuit High Input code on a 2003 Infiniti G35?
The code is often triggered by a faulty throttle position sensor, damaged wiring, or a malfunction in the throttle control system.
3. How can I diagnose the cause of OBDII code P0123 on my 2003 Infiniti G35?
You can use a scan tool to check for the specific code, visually inspect the throttle position sensor and its wiring, and perform voltage tests to pinpoint the issue.
4. Can a dirty throttle body cause OBDII code P0123 on a 2003 Infiniti G35?
Yes, a dirty throttle body can disrupt the proper functioning of the throttle position sensor, leading to the code being triggered.
5. Is it safe to continue driving my 2003 Infiniti G35 with OBDII code P0123 present?
It is not recommended to drive with this code present, as it can lead to poor engine performance and potentially cause further damage over time.
6. How can I repair OBDII code P0123 on my 2003 Infiniti G35?
Repair options may include replacing the throttle position sensor, repairing damaged wiring, cleaning the throttle body, or addressing any other underlying issues identified during diagnosis.
7. Can resetting the ECU clear the Throttle Position Sensor/Switch '1' Circuit High Input code on a 2003 Infiniti G35?
Resetting the ECU may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return.
8. Will replacing the throttle position sensor fix OBDII code P0123 on a 2003 Infiniti G35?
In many cases, replacing the faulty throttle position sensor can resolve the issue, but it's important to diagnose the problem accurately to ensure a successful repair.
9. How much does it typically cost to repair OBDII code P0123 on a 2003 Infiniti G35?
The cost of repairs can vary depending on the exact cause of the code, but it may range from $100 to $300 for parts and labor.
10. Can a DIY enthusiast fix OBDII code P0123 on a 2003 Infiniti G35?
While some aspects of diagnosing and repairing this code can be tackled by a DIY enthusiast, it's recommended to have a professional mechanic perform the repairs to ensure accurate diagnosis and a proper fix.
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