P0122 Ford Code - Throttle/Pedal Position Sensor 'A' Circuit Low Input
Quick Answer
The P0122 diagnostic trouble code (DTC) for Ford vehicles indicates that there is a low input signal coming from the throttle/pedal position sensor 'A' circuit. Common causes include Faulty throttle/pedal position sensor, Corroded or damaged wiring/connectors related to the sensor, Issues with the ECM or related control modules. 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
- P0122 Ford indicates Throttle/Pedal Position Sensor 'A' Circuit Low Input.
- Common causes
- Common causes include Faulty throttle/pedal position sensor, Corroded or damaged wiring/connectors related to the sensor, Issues with the ECM or related control modules.
- 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.
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Code P0122 Ford Description
The P0122 diagnostic trouble code (DTC) for Ford vehicles indicates that there is a low input signal coming from the throttle/pedal position sensor 'A' circuit. This sensor is responsible for monitoring the position of the throttle pedal and transmitting this information to the engine control module (ECM). When the ECM receives a low input signal, it may not be able to accurately adjust the air-fuel mixture, ignition timing, and other parameters necessary for proper engine performance. This can lead to a variety of issues that can affect the vehicle's drivability and overall performance.
Common Causes of P0122 Ford
- Faulty throttle/pedal position sensor
- Corroded or damaged wiring/connectors related to the sensor
- Issues with the ECM or related control modules
- Throttle body malfunction
- Electronic interference or sensor calibration issues
Symptoms of P0122 Ford
- Reduced engine power or acceleration
- Stalling or rough idling
- Difficulty shifting gears (in automatic transmission vehicles)
- Illuminated check engine light
- Reduced fuel efficiency
How to Fix P0122 Ford
- Begin by diagnosing the specific cause of the low input signal, using a scan tool to retrieve and interpret freeze frame data.
- Inspect the throttle/pedal position sensor and its wiring/connectors for any signs of damage, corrosion, or loose connections.
- Test the sensor's output voltage and resistance with a multimeter to determine if it is within the manufacturer's specified range.
- If the sensor is faulty, replace it with a new OEM or high-quality aftermarket part, ensuring proper installation and calibration.
- Clear the DTC from the ECM's memory and perform a test drive to verify that the issue has been resolved.
Cost to Fix P0122 Ford
The cost of repairing a P0122 code on a Ford vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates can fluctuate, so it's recommended to obtain quotes from multiple auto repair shops to ensure a competitive price. Additionally, if the throttle/pedal position sensor needs to be replaced, it's advisable to use a high-quality part to ensure long-lasting performance.
When is the Code Detected?
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Information for Specific Ford Models
- P0122 1997 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 1998 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 1999 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 2000 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 2002 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 2003 Ford F150 — Throttle Position Sensor Circuit Low Input
- P0122 2006 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2007 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2008 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2009 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2010 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2011 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
- P0122 2012 Ford Fusion — Throttle/Pedal Position Sensor 'A' Circuit Low Input
Frequently Asked Questions about P0122 Ford Code
1. What are the common symptoms of OBDII code P0122 in a Ford vehicle?
- Common symptoms include poor acceleration, stalling, rough idling, reduced fuel efficiency, and the vehicle going into "limp mode."
2. What are the possible causes of the Throttle/Pedal Position Sensor 'A' Circuit Low Input code (P0122) in a Ford?
- The potential causes include a faulty throttle position sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle's ECM (Engine Control Module).
3. How can I diagnose the cause of OBDII code P0122 in my Ford?
- You can start by checking the throttle position sensor's wiring and connectors for any visible damage. Using a multimeter, you can also test the sensor's voltage and resistance to determine if it is functioning properly.
4. Can a dirty throttle body cause OBDII code P0122 in a Ford?
- Yes, a dirty or malfunctioning throttle body can cause incorrect readings from the throttle position sensor, leading to the P0122 code. It is recommended to clean the throttle body as part of the diagnostic process.
5. What are some repair tips for resolving OBDII code P0122 in a Ford?
- Repair tips include replacing the throttle position sensor if it is faulty, repairing any damaged wiring or connectors, cleaning the throttle body, and resetting the ECM by clearing the trouble codes.
6. Is it safe to continue driving my Ford with OBDII code P0122 present?
- It is not recommended to drive the vehicle with the P0122 code, as it can lead to performance issues and potential safety hazards. It is best to address the problem promptly to avoid further damage.
7. Will resetting the trouble codes make OBDII code P0122 go away permanently?
- Resetting the trouble codes may temporarily clear the P0122 code, but if the underlying issue is not resolved, the code is likely to reappear. It is important to diagnose and fix the root cause of the problem.
8. Can I repair OBDII code P0122 in my Ford vehicle myself, or should I take it to a professional mechanic?
- Depending on your mechanical skills and access to tools, you may be able to repair the P0122 code yourself by following diagnostic procedures and replacing components as needed. However, if you are unsure or uncomfortable with the process, it is advisable to seek the help of a professional mechanic.
9. How much does it typically cost to repair OBDII code P0122 in a Ford at a repair shop?
- The cost of repairing OBDII code P0122 can vary depending on the cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts. It is recommended to obtain quotes from different shops for an accurate estimate.
10. Can a temporary glitch trigger OBDII code P0122 in a Ford, or is it always indicative of a serious problem?
- While a temporary glitch or sensor error can sometimes trigger the P0122 code, it is generally an indication of a real issue with the throttle position sensor or related components. It is important to investigate the cause to prevent potential future problems.
Discuss the causes and fixes for P0122 Ford OBDII Code
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What model and year is your vehicle? You have to replace the Throttle Body.
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Is it possible for the Excelerator pedal switch to be causing that code to pop off and on and send the computer into a limp home mode
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Yes. Problems with the accelerator pedal could cause your vehicle go into a limp mode.
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The p 122 is a recurring code and it seems to only happen when I start up the engine. I had a mechanic test it at a transmission shop and they told me it was not the transmission. The sensor has already been replaced. He put a meter on it and said that the voltage was not sweeping like it was supposed to which indicated a grounding problem. We tried just straight grounding off the ground wire with a crimp and that just caused more problems. So what should we check now? Thanks for any info!
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What sensor did you replaced? Looks like for your 2004 Ford Taurus, the problem is with the Throttle Body.
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Replaced the tps...twice, thought the first one may have been bad. It is also the throttle position sensor that the guy at the shop said the voltage was not properly sweeping on and suggested that it may be a grounding problem.
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