Volvo Land Rover Error Code P1124: How to Fix It

Q: Can I drive my Volvo/Land Rover with error code P1124?

It is not recommended. Driving with a faulty TPS can cause stalling, poor acceleration, or unresponsive throttle, which may lead to unsafe driving conditions. It's best to fix the issue promptly.

Q: Is error code P1124 the same in all Volvo and Land Rover models?

Yes, the code P1124 generally means the same thing: throttle position sensor out of self-test range. However, diagnostic procedures and replacement parts may vary slightly between models. Always consult your vehicle's service manual for specific details.

Q: How much does it cost to replace a throttle position sensor?

The part itself typically costs between $30 and $100, depending on the model. Labor costs at a shop range from $50 to $150. DIY replacement can save you the labor fee.

Q: Can a bad TPS cause transmission problems?

Yes, a faulty TPS can affect transmission shift points because the ECM uses TPS data to determine shift timing. You may experience harsh or delayed shifts.

Q: Do I need to reprogram the ECM after replacing the TPS?

In most cases, no. However, some models require a TPS recalibration (see Step 5). If you have an aftermarket TPS, programming may be necessary. Always check the service manual.

Abstract

Error code P1124 indicates that the Throttle Position Sensor (TPS) in your Volvo or Land Rover is out of its self-test range. This typically means the sensor is sending incorrect voltage signals to the engine control module (ECM), which can cause poor acceleration, stalling, or rough idle. The issue is often due to a faulty sensor, wiring problems, or a need for sensor recalibration.