EngineModerate✅ DIY Friendly

P0124

Q: What does OBD2 code P0124 mean?

P0124 means: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent. The throttle position sensor A signal is cutting in and out intermittently.

Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

The throttle position sensor A signal is cutting in and out intermittently.

SeverityModerate

CategoryEngine

Est. Repair Cost$100-$250

Code TypePowertrain

DIY RepairYes

⚡ Common Causes

›Worn throttle position sensor
›Loose connector
›Chafed wiring
›Throttle body carbon buildup affecting sensor

⚠️ Symptoms

›Check engine light flickering
›Intermittent hesitation or surging
›Possible limp mode

✅ How to Fix — Step by Step

Step 1:Inspect connector and wiring
Step 2:Clean throttle body
Step 3:Replace TPS sensor if fault persists

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Fuel Pressure Gauge
✔Compression Tester
✔Spark Tester

Using the correct diagnostic tools helps identify the root cause of P0124 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: On electronic throttle body systems, this sensor is usually not sold separately - expect to replace the whole throttle body assembly.

Frequently Asked Questions

What does OBD2 code P0124 mean?+

P0124 stands for Throttle/Pedal Position Sensor/Switch A Circuit Intermittent. The throttle position sensor A signal is cutting in and out intermittently.

What causes code P0124?+

Worn throttle position sensor; Loose connector; Chafed wiring; Throttle body carbon buildup affecting sensor

How do I fix code P0124?+

Inspect connector and wiring; Clean throttle body; Replace TPS sensor if fault persists

How much does it cost to fix P0124?+

Estimated repair cost for P0124 is $100-$250.

Is P0124 DIY-friendly?+

Yes — P0124 is generally DIY-friendly with basic tools.