P1123 Mazda 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 Mazda 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 Mazda Description
What are the Possible Causes of the DTC P1123 Mazda?
- 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 Mazda?
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 Mazda 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 P1123 Mazda Code
1. What does the OBDII code P1123 mean for a Mazda?
P1123 indicates an intermittent high voltage issue in the throttle position sensor (TPS) circuit, which may disrupt proper throttle response.
2. What are the common symptoms of a P1123 code on a Mazda?
Symptoms include poor acceleration, erratic idling, reduced fuel efficiency, stalling, and an illuminated check engine light.
3. What causes the P1123 code to appear in a Mazda?
Common causes include a faulty throttle position sensor, damaged wiring or connectors, or issues with the engine control module (ECM).
4. Can I drive my Mazda with the P1123 code active?
Driving with a P1123 code is not recommended, as it may lead to poor performance, unsafe driving conditions, or further damage to the engine.
5. How do I diagnose the P1123 code on my Mazda?
Start by inspecting the TPS and its wiring for damage or loose connections, then use a multimeter to test the sensor's voltage output and continuity.
6. What is the most likely fix for the P1123 code in a Mazda?
The most common repair involves replacing a faulty throttle position sensor or repairing damaged wiring in the TPS circuit.
7. Can a dirty throttle body cause the P1123 code in a Mazda?
While rare, a dirty throttle body can sometimes cause irregular voltage readings, which might trigger the code. Cleaning the throttle body may help if dirt buildup is excessive.
8. How much does it cost to repair a P1123 code on a Mazda?
The repair cost depends on the issue. Replacing the TPS typically costs $100–$300, while fixing wiring issues can vary based on labor and parts.
9. Will clearing the P1123 code fix the problem?
Clearing the code without addressing the underlying issue will only temporarily remove it. The problem will likely return until repaired.
10. How can I prevent the P1123 code from recurring in my Mazda?
Regular maintenance, such as inspecting the TPS and wiring for wear and cleaning the throttle body, can help prevent this code from appearing.
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