P2122 2012 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit Range/Performance
Quick Answer
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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
- P2122 2012 Nissan Sentra indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal 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 P2122 2012 Nissan Sentra Description
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
What are the Possible Causes of the DTC P2122 2012 Nissan Sentra?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
How to Fix the DTC P2122 2012 Nissan Sentra?
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 P2122 2012 Nissan Sentra 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 P2122 2012 Nissan Sentra Code
1. What does OBDII code P2122 mean on a 2012 Nissan Sentra?
P2122 indicates a low voltage signal from the accelerator pedal position (APP) sensor, which is responsible for communicating throttle input to the engine control module (ECM).
2. What are the common symptoms of code P2122 in a 2012 Nissan Sentra?
Symptoms may include reduced engine power, the throttle not responding properly, the check engine light turning on, or the vehicle going into "limp mode."
3. What causes the P2122 code on a 2012 Nissan Sentra?
Possible causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, a malfunctioning ECM, or electrical issues such as a low voltage supply.
4. Can I drive my 2012 Nissan Sentra with the P2122 code?
It’s not recommended, as the vehicle may experience reduced power or unresponsive acceleration, which could be dangerous in traffic.
5. How do I fix the P2122 code on a 2012 Nissan Sentra?
Repairs may involve inspecting and replacing a faulty APP sensor, repairing damaged wiring or connectors, clearing the code with a scan tool, or reprogramming or replacing the ECM if necessary.
6. How do I diagnose the P2122 code on my 2012 Nissan Sentra?
Start by using an OBDII scanner to confirm the code, then inspect the APP sensor, wiring, and connectors for damage. Check for proper voltage and continuity in the circuit.
7. What is the cost to repair a P2122 code on a 2012 Nissan Sentra?
Repair costs vary but can range from $100 to $300 for sensor replacement, while more extensive electrical repairs or ECM replacement can cost significantly more.
8. Can a dirty throttle body cause the P2122 code?
A dirty throttle body is unlikely to directly trigger P2122, but it may cause throttle response issues that mimic APP sensor problems.
9. Does the P2122 code require APP sensor replacement?
Not always. The issue could be due to wiring faults, poor connections, or ECM problems. Proper diagnosis is needed before replacing the sensor.
10. How do I prevent the P2122 code from recurring in my 2012 Nissan Sentra?
Regularly inspect and maintain the accelerator pedal assembly and electrical connections, and promptly address any wiring issues or warning lights.
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