P1123 Code - Throttle Position Sensor Circuit Intermittent High Voltage
Quick Answer
The Powertrain Control Module (PCM) monitors the Throttle Position Sensor. 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
- P1123 indicates Throttle Position Sensor Circuit Intermittent 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 P1123 Description
What are the Possible Causes of the DTC P1123?
- Faulty Throttle Position Sensor
- Throttle Position Sensor harness is open or shorted
- Throttle Position Sensor circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1123?
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 P1123 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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Information for Specific Makes
- P1123 Audi — Long Term Fuel Trim Adjustment Bank 1 System Too Rich
- P1123 BMW — Pedal Position 1 High Input
- P1123 Ford — Throttle Position Sensor Circuit Intermittent High Voltage
- P1123 Hyundai — Long Term Fuel Trim Error System Rich
- P1123 Land Rover — Accelerator Pedal Position Sensor Short Circuit To Battery
- P1123 Lexus — Coolant Flow Control Valve Position Sensor Circuit High
- P1123 Lincoln — Throttle Position Sensor Circuit Intermittent High Voltage
- P1123 Mazda — Throttle Position Sensor Circuit Intermittent High Voltage
- P1123 Mercury — Throttle Position Sensor Circuit Intermittent High Voltage
- P1123 MINI — Pedal Position 1 High Input
- P1123 Toyota — Coolant Flow Control Valve Position Sensor Circuit High
- P1123 Volkswagen — Long Term Fuel Trim Adjustment Bank 1 System Too Rich
Frequently Asked Questions about P1123 Code
1. What are the common symptoms of OBDII code P1123 (Throttle Position Sensor Circuit Intermittent High Voltage)?
The common symptoms include rough idling, stalling, poor acceleration, and potential issues with the vehicle's fuel efficiency.
2. What are the possible causes of OBDII code P1123?
The code P1123 can be caused by a faulty throttle position sensor, wiring issues in the throttle position sensor circuit, or problems with the engine control module.
3. How can I diagnose the cause of OBDII code P1123?
Diagnosing the cause of P1123 involves using a scan tool to check for the code, testing the throttle position sensor, inspecting the wiring for damage, and checking for any loose connections.
4. Can I drive my vehicle with OBDII code P1123?
It is not recommended to drive your vehicle with code P1123 present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.
5. How do I repair OBDII code P1123?
Repairing code P1123 typically involves replacing the faulty throttle position sensor, repairing any damaged wiring, or reprogramming the engine control module if necessary.
6. Are there any DIY tips for fixing OBDII code P1123?
While some basic troubleshooting steps can be done by DIY enthusiasts, it is recommended to seek professional help for diagnosing and repairing OBDII code P1123 to ensure proper resolution.
7. How much does it cost to fix OBDII code P1123?
The cost of fixing code P1123 can vary depending on the extent of the issue, the need for parts replacement, and labor costs. It is advisable to get estimates from a trusted mechanic or repair shop.
8. Can a bad throttle position sensor cause code P1123?
Yes, a faulty throttle position sensor is a common cause of OBDII code P1123, as it can lead to intermittent high voltage readings in the sensor circuit.
9. Will resetting the OBDII system clear code P1123?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing P1123 is not addressed, the code is likely to reappear after driving the vehicle for a while.
10. How urgent is it to address OBDII code P1123?
It is recommended to address OBDII code P1123 as soon as possible to prevent potential damage to other engine components, ensure safe driving conditions, and maintain optimal vehicle performance.
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