Updated on Feb 19, 2024 • 3 min read
The P0123 diagnostic trouble code (DTC) is related to a problem with the Throttle Position Sensor (TPS). The TPS is a sensor that measures the position of the throttle valve in the engine and sends this information to the engine control module (ECM). The ECM uses this information to control the fuel injection and ignition timing.
When the ECM detects a voltage signal from the TPS that is higher than the expected range, it sets the P0123 code and illuminates the Check Engine Light (CEL). This can indicate a fault in the TPS circuit or the sensor itself.
Summary
P0123 Code: Indicates a problem with the Throttle Position Sensor (TPS) sending a higher than expected voltage signal.
Causes: Faulty TPS, incorrect ECM readings, or issues with the throttle body assembly.
Symptoms: Engine misfires, reduced power/acceleration, and stalling.
Diagnosis and Fix: Involves checking TPS voltage, testing wiring, and inspecting the sensor for faults.
Prevention: Regular maintenance, checking the TPS, keeping the engine compartment clean, and prompt issue resolution.
If you suspect that your vehicle has a P0123 code, it is essential to have a professional mechanic diagnose and repair the issue. The following are some steps that a mechanic may take to diagnose and fix a P0123 code:
The throttle position sensor is a device that measures the position of your throttle pedal and sends that information to your vehicle’s computer. The TP sensor is often referred to as a “TPS,” which stands for Throttle Position Switch.
The TPS operates in conjunction with other components in your engine’s air intake system, including the throttle body, intake manifold, and air filter.
You can purchase throttle position sensor from AutoZone.
In order to troubleshoot your car’s problem, you will need to check the codes. This can be done by a certified mechanic or at home with an OBD2 code reader. If you want to do it yourself and save some money, here are the steps:
In conclusion, the P0123 diagnostic trouble code is related to a problem with the Throttle Position Sensor (TPS). If you suspect that your vehicle has a P0123 code, it’s essential to have a professional mechanic diagnose and repair the issue as soon as possible to ensure the safety and longevity of your vehicle.
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