P0123 Audi Code - Throttle Pedal Position Sensor/Switch 'A' Circuit High
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 Audi indicates Throttle Pedal Position Sensor/Switch 'A' Circuit High.
- 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 Audi 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 Audi?
- 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 Audi?
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 Audi 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 Audi Code
1. What are the common symptoms of OBDII code P0123 in an Audi?
- Common symptoms include issues with acceleration, decreased engine power, rough idling, and the vehicle going into "limp mode."
2. What can cause the Throttle Pedal Position Sensor/Switch 'A' Circuit High code in an Audi?
- Possible causes include a faulty throttle pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning engine control module (ECM).
3. How can I diagnose the cause of OBDII code P0123 in my Audi?
- Diagnosis typically involves checking the throttle pedal sensor's voltage readings with a multimeter, inspecting the sensor wiring for damage, and scanning the ECM for related fault codes.
4. Can I still drive my Audi with OBDII code P0123 present?
- It is not recommended to drive your Audi with this code present, as it can lead to performance issues and potential safety concerns. It's best to address the underlying problem promptly.
5. How can I repair OBDII code P0123 in my Audi?
- Repair options may include replacing the throttle pedal position sensor, repairing damaged wiring, or reprogramming the ECM if necessary. Consulting a professional mechanic is advisable for accurate diagnosis and repair.
6. Is it safe to reset the OBDII code P0123 on my Audi using a diagnostic scanner?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. It's crucial to address the root cause of the problem to prevent further issues.
7. What are the long-term effects of ignoring OBDII code P0123 in an Audi?
- Ignoring this code can lead to decreased fuel efficiency, potential damage to other engine components, and increased risk of sudden loss of power while driving.
8. Can a DIY enthusiast fix OBDII code P0123 in an Audi?
- While some DIY enthusiasts may have the skills to address this code, it's recommended to seek professional help, especially for accurate diagnosis and proper repair to avoid further complications.
9. How much does it cost to repair OBDII code P0123 in an Audi?
- The cost of repair can vary depending on the specific issue causing the code, the model of the Audi, and labor rates in your area. It's best to get a diagnostic inspection from a qualified mechanic for an accurate estimate.
10. Is OBDII code P0123 covered under any Audi warranty or recall?
- It's advisable to check with Audi customer service or your local dealership to inquire about any existing warranties or recalls related to OBDII code P0123.
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