P0123 Pontiac Code - Throttle Position Sensor Circuit High Voltage
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 Pontiac indicates Throttle Position Sensor Circuit High Voltage.
- 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 Pontiac 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 Pontiac?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
How to Fix the DTC P0123 Pontiac?
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 Pontiac 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 Pontiac Code
1. What are the common symptoms of OBDII code P0123 in a Pontiac related to the Throttle Position Sensor Circuit High Voltage?
- Common symptoms include issues with acceleration, poor fuel economy, stalling, and potential difficulty shifting gears.
2. What are the possible causes of OBDII code P0123 in a Pontiac indicating a Throttle Position Sensor Circuit High Voltage?
- The code can be triggered by a faulty throttle position sensor, damaged wiring in the sensor circuit, or a problem with the engine control module.
3. How can I diagnose the OBDII code P0123 in my Pontiac pointing to a Throttle Position Sensor Circuit High Voltage issue?
- Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the throttle position sensor's voltage output, and inspecting the sensor wiring for any damage.
4. Can a dirty throttle body cause the OBDII code P0123 to be triggered in a Pontiac?
- Yes, a dirty throttle body can disrupt the sensor readings and potentially lead to a high voltage signal, triggering the P0123 code.
5. What are some repair tips for addressing the OBDII code P0123 related to the Throttle Position Sensor Circuit High Voltage in a Pontiac?
- Repair tips include cleaning the throttle body, inspecting and repairing any damaged sensor wiring, and replacing the throttle position sensor if necessary.
6. Is it safe to continue driving my Pontiac with the OBDII code P0123 indicating a Throttle Position Sensor Circuit High Voltage issue?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.
7. Can a DIY enthusiast replace the throttle position sensor in a Pontiac to resolve the OBDII code P0123?
- Yes, replacing the throttle position sensor can be a DIY project with the right tools and knowledge. However, if unsure, it is recommended to seek professional help.
8. How much does it typically cost to repair the OBDII code P0123 related to the Throttle Position Sensor Circuit High Voltage in a Pontiac?
- Costs can vary depending on the exact cause of the issue, but generally, replacing a throttle position sensor can range from $50 to $200, excluding labor charges.
9. Will resetting the OBDII code P0123 in my Pontiac temporarily fix the issue related to the Throttle Position Sensor Circuit High Voltage?
- Resetting the code may temporarily clear the error, but if the underlying issue with the throttle position sensor or wiring is not addressed, the code is likely to reappear.
10. How long does it typically take to repair the OBDII code P0123 Pontiac indicating a Throttle Position Sensor Circuit High Voltage problem?
- The repair time can vary based on the exact cause of the issue and the expertise of the person performing the repair. Generally, it can take anywhere from 30 minutes to a few hours to address this problem.
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