P0123 Mitsubishi Code - Throttle Position Sensor 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 Mitsubishi indicates Throttle Position Sensor 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 Mitsubishi 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 Mitsubishi?
- 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 Mitsubishi?
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 Mitsubishi 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 Mitsubishi Code
1. What does the OBDII code P0123 mean for a Mitsubishi?
P0123 indicates that the Throttle Position Sensor (TPS) circuit has a high input voltage, suggesting a possible fault with the sensor or its wiring.
2. What are the common symptoms of a P0123 code in a Mitsubishi?
Symptoms may include poor acceleration, rough idling, reduced fuel efficiency, a lack of throttle response, or the vehicle entering "limp" mode.
3. What causes the P0123 code to trigger in a Mitsubishi?
Common causes include a faulty throttle position sensor, damaged or corroded wiring, a loose connector, or issues with the engine control module (ECM).
4. How can I diagnose a P0123 code on my Mitsubishi?
Start by inspecting the TPS and its wiring for damage or loose connections. Use a multimeter to test the sensor's voltage output and compare it to manufacturer specifications.
5. Can I drive my Mitsubishi with a P0123 code?
Driving with this code is not recommended, as it could lead to unsafe driving conditions due to erratic throttle response or reduced engine performance.
6. How do I fix the P0123 code on a Mitsubishi?
Repairs may involve replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
7. How much does it cost to fix a P0123 code on a Mitsubishi?
The cost varies but typically ranges from $100 to $300, depending on whether the TPS or wiring needs repair and if professional diagnostics are required.
8. Can a dirty throttle body cause a P0123 code?
A dirty throttle body is not a direct cause of P0123 but may contribute to throttle-related issues. Cleaning it during diagnostics is a good preventative step.
9. Will resetting the check engine light fix a P0123 code?
Resetting the light might temporarily clear the code, but the underlying issue must be resolved to prevent it from returning.
10. Is the P0123 code specific to Mitsubishi vehicles?
No, P0123 is a generic OBDII code that can apply to many vehicles, but the repair steps may vary depending on the manufacturer and model.
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