P1225 2012 Nissan Altima Sedan Code - Closed Throttle Position Learning Performance Problem
Quick Answer
Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty Electric throttle control actuator (TP sensor 2), Electric throttle control actuator (TP sensor 2) harness is open or shorted, Electric throttle control actuator (TP sensor 2) 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
- P1225 2012 Nissan Altima Sedan indicates Closed Throttle Position Learning Performance Problem.
- Common causes
- Common causes include Faulty Electric throttle control actuator (TP sensor 2), Electric throttle control actuator (TP sensor 2) harness is open or shorted, Electric throttle control actuator (TP sensor 2) 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 P1225 2012 Nissan Altima Sedan Description
The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
What are the Possible Causes of the DTC P1225 2012 Nissan Altima Sedan?
- Faulty Electric throttle control actuator (TP sensor 2)
- Electric throttle control actuator (TP sensor 2) harness is open or shorted
- Electric throttle control actuator (TP sensor 2) circuit poor electrical connection
How to Fix the DTC P1225 2012 Nissan Altima Sedan?
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 P1225 2012 Nissan Altima Sedan 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 P1225 2012 Nissan Altima Sedan Code
1. What does the OBDII code P1225 mean on a 2012 Nissan Altima Sedan?
P1225 indicates a "Closed Throttle Position Learning Performance Problem," meaning the engine control module (ECM) has detected an issue with the throttle position learning process.
2. What are the symptoms of the P1225 code in a 2012 Nissan Altima?
Common symptoms include rough idling, poor acceleration, stalling, reduced engine power, and the check engine light turning on.
3. What causes the P1225 code to appear?
The code can be triggered by a dirty or faulty throttle body, a malfunctioning throttle position sensor, wiring issues, or an incomplete throttle position learning procedure.
4. How do you fix the P1225 code on a 2012 Nissan Altima?
Start by cleaning the throttle body, ensuring all electrical connections are secure, and performing the throttle position learning procedure. If the issue persists, the throttle body or throttle position sensor may need replacement.
5. What is the throttle position learning procedure?
The throttle position learning procedure allows the ECM to recalibrate the throttle body's closed and open positions. It involves specific steps, such as turning the ignition on and off in a precise sequence, and should be followed according to the service manual.
6. Can a dirty throttle body cause the P1225 code?
Yes, a dirty throttle body can disrupt the throttle plate's movement, preventing the ECM from learning the correct closed throttle position.
7. Is it safe to drive with the P1225 code active?
Driving with this code is not recommended as it can lead to reduced engine performance, stalling, or unsafe driving conditions.
8. How much does it cost to repair the P1225 code on a 2012 Nissan Altima?
Costs can vary, but cleaning the throttle body typically costs $100-$200, while replacing it or the throttle position sensor may range from $300-$700, including labor.
9. Can a disconnected battery cause the P1225 code?
Yes, disconnecting the battery can reset the ECM, requiring the throttle position learning procedure to be performed again.
10. Do I need special tools to perform the throttle position learning procedure?
No special tools are required, but following the exact steps outlined in the service manual is essential for successful calibration.
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