P0120 Cadillac Code - Throttle Position Sensor 1 Circuit
Quick Answer
The Throttle Position (TP) Sensor responds to the accelerator pedal movement. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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
- P0120 Cadillac indicates Throttle Position Sensor 1 Circuit .
- Common causes
- Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor 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 P0120 Cadillac Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0120 Cadillac?
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
How to Fix the DTC P0120 Cadillac?
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 P0120 Cadillac 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 P0120 Cadillac Code
1. What does OBDII code P0120 mean on a Cadillac?
P0120 indicates a malfunction in the Throttle Position Sensor (TPS) 1 circuit, which monitors the position of the throttle.
2. What are common symptoms of code P0120 on a Cadillac?
Symptoms include poor acceleration, rough idling, stalling, reduced fuel efficiency, and the Check Engine Light being illuminated.
3. What causes code P0120 on a Cadillac?
Common causes include a faulty TPS, wiring issues like shorts or corrosion, or problems with the throttle body assembly.
4. Can I drive my Cadillac with code P0120?
While the vehicle may still be drivable, reduced performance and safety concerns make it advisable to address the issue promptly.
5. How do I diagnose code P0120 on a Cadillac?
Use an OBDII scanner to verify the code, inspect the TPS and surrounding wiring for damage, and test the sensor using a multimeter.
6. How can I fix code P0120 on a Cadillac?
Repair or replace the throttle position sensor, fix damaged wiring, or clean the throttle body if dirt or debris is causing the issue.
7. How much does it cost to repair code P0120 on a Cadillac?
Costs vary but typically range from $150 to $400, depending on whether you replace the TPS or address wiring issues.
8. Will a faulty Throttle Position Sensor damage my Cadillac engine?
While it may not directly damage the engine, prolonged driving with a faulty TPS can cause performance issues and strain other components.
9. Can a dirty throttle body cause code P0120 on a Cadillac?
Yes, a dirty or clogged throttle body can interfere with TPS readings and trigger the P0120 code.
10. Do I need to reset my Cadillac’s ECU after fixing code P0120?
Yes, after repairs, clear the code using an OBDII scanner to reset the ECU and verify that the issue has been resolved.
Discuss the causes and fixes for P0120 Cadillac OBDII Code
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The P0120 code is for the "Throttle Position Sensor". The sensor is part of the "Throttle Body"
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