P1120 1999 Ford F150 Code - Throttle Position Sensor Out of Range
Quick Answer
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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
- P1120 1999 Ford F150 indicates Throttle Position Sensor Out of Range.
- Common causes
- Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor 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 P1120 1999 Ford F150 Description
• Closed throttle (includes idle or deceleration)
• Part throttle (includes cruise or moderate acceleration)
• Wide open throttle (includes maximum acceleration or de-choke on crank)
• Throttle angle rate
What are the Possible Causes of the DTC P1120 1999 Ford F150?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
- Throttle position sensor not properly adjusted
How to Fix the DTC P1120 1999 Ford F150?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1120 1999 Ford F150 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 P1120 1999 Ford F150 code?
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Frequently Asked Questions about P1120 1999 Ford F150 Code
1. What are the common symptoms of OBDII code P1120 on a 1999 Ford F150?
- Common symptoms include rough idling, stalling, poor acceleration, and the vehicle going into "limp mode."
2. What are the possible causes of the Throttle Position Sensor Out of Range code on a 1999 Ford F150?
- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, a dirty throttle body, or a problem with the throttle control system.
3. How can I diagnose the cause of OBDII code P1120 on my 1999 Ford F150?
- You can use a scan tool to read the code, check the throttle position sensor's voltage, inspect the wiring for damage, and clean the throttle body to diagnose the issue.
4. Can I drive my 1999 Ford F150 with OBDII code P1120?
- It is not recommended to drive the vehicle with this code as it can lead to poor performance and potential safety hazards.
5. How can I repair OBDII code P1120 on my 1999 Ford F150?
- Repair options include replacing the throttle position sensor, repairing any damaged wiring, cleaning the throttle body, or addressing any issues with the throttle control system.
6. Is it safe to continue driving if the Throttle Position Sensor Out of Range code clears on its own?
- It is still recommended to diagnose and address the issue, as intermittent occurrences of this code may indicate an underlying problem that requires attention.
7. Will disconnecting the battery reset OBDII code P1120 on a 1999 Ford F150?
- Disconnecting the battery may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return.
8. How much does it typically cost to repair OBDII code P1120 on a 1999 Ford F150?
- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $300 for parts and labor.
9. Can a DIY enthusiast tackle the repair for OBDII code P1120 on a 1999 Ford F150?
- Depending on their skill level, a DIY enthusiast may be able to replace the throttle position sensor or clean the throttle body, but more complex issues may require professional assistance.
10. How often does the Throttle Position Sensor Out of Range code occur on a 1999 Ford F150?
- The frequency of this code can vary, but it is a relatively common issue in vehicles with throttle position sensors.
Discuss the causes and fixes for P1120 1999 Ford F150 OBDII Code
-
How can I test the causes of this issue? I have replaced the TPS and the light when away but now its back on for the third time so I decided to do some homework could you guys help me out?
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As the code description indicates the TPS is out of range and tha usually means that the TPS is not properly adjusted. You could try adjusting the TPS one more time before replacing.
What engine size is your F150? here is a good tutorial to adjust the TPS: http://www.f150hub.com/main...
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