P0123 2018 Chevrolet Silverado Code - Throttle Position Sensor Circuit High Voltage
Quick Answer
The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 2018 Chevrolet Silverado indicates Throttle Position Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0123 2018 Chevrolet Silverado?
- Faulty Throttle Body Assembly
- Throttle Body Assembly harness is open or shorted
- Throttle Body Assembly circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0123 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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.
Need more information about the P0123 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P0123 2018 Chevrolet Silverado Code
What does the OBDII code P0123 mean for a 2018 Chevrolet Silverado?
Code P0123 indicates a high voltage issue in the Throttle Position Sensor (TPS) circuit, often caused by an electrical fault or sensor malfunction.
What are the common symptoms of code P0123 in a 2018 Chevrolet Silverado?
Symptoms include poor engine performance, erratic idle, hesitation during acceleration, reduced fuel efficiency, and possible activation of the Check Engine Light.
What causes the P0123 code in a 2018 Chevrolet Silverado?
Common causes include a faulty throttle position sensor, damaged wiring or connectors, issues with the PCM, or electrical interference in the TPS circuit.
Can I drive my 2018 Chevrolet Silverado with the P0123 code?
While the vehicle may still be drivable, ignoring the issue could lead to further engine performance problems or unsafe driving conditions. Prompt diagnosis and repair are recommended.
How do I diagnose the P0123 code in a 2018 Chevrolet Silverado?
Begin by inspecting the throttle position sensor, wiring, and connectors for damage. Use a multimeter to test the sensor voltage and consult a repair manual for proper specifications.
How do I fix the P0123 code in a 2018 Chevrolet Silverado?
Repairs may include replacing the throttle position sensor, repairing damaged wiring or connectors, cleaning electrical contacts, or updating/reprogramming the PCM.
Can a dirty throttle body cause the P0123 code in a 2018 Chevrolet Silverado?
A dirty throttle body is unlikely to directly cause P0123, but cleaning it during repairs can improve overall throttle performance and prevent related issues.
What tools are needed to repair the P0123 code?
Basic tools include a multimeter, OBDII scanner, wire repair kit, and possibly a wrench set for removing the throttle position sensor.
How much does it cost to fix the P0123 code in a 2018 Chevrolet Silverado?
Depending on the issue, repairs can range from $50 for a simple wiring fix to $300+ for sensor replacement or PCM reprogramming.
Can a faulty PCM cause the P0123 code in a 2018 Chevrolet Silverado?
Yes, a malfunctioning PCM can misinterpret sensor signals or fail to regulate voltage properly, leading to the P0123 code.
Discuss the causes and fixes for P0123 2018 Chevrolet Silverado OBDII Code
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