P1226 2004 Infiniti G35 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
- P1226 2004 Infiniti G35 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 P1226 2004 Infiniti G35 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 P1226 2004 Infiniti G35?
- 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 P1226 2004 Infiniti G35?
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 P1226 2004 Infiniti G35 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 P1226 2004 Infiniti G35 Code
1. What does the OBDII code P1226 mean on a 2004 Infiniti G35?
P1226 refers to a "Closed Throttle Position Learning Performance Problem," indicating an issue with the throttle body’s ability to properly learn and adjust its closed position.
2. What are the symptoms of code P1226 on a 2004 Infiniti G35?
Common symptoms include rough idling, poor acceleration, reduced fuel efficiency, and possible stalling at low speeds.
3. What causes the P1226 code to appear?
This code is often caused by a dirty or faulty throttle body, incorrect throttle position sensor calibration, or issues within the electronic throttle control system.
4. How do I fix the P1226 code on my 2004 Infiniti G35?
Start by cleaning the throttle body, performing a throttle position relearn procedure, and checking for any wiring or sensor issues. Replace the throttle body or throttle position sensor if necessary.
5. Can a dirty throttle body trigger the P1226 code?
Yes, a dirty throttle body can cause the throttle plate to stick or misalign, leading to the P1226 code.
6. How do I perform a throttle position relearn on a 2004 Infiniti G35?
The relearn procedure involves key cycling and pressing the accelerator in a specific sequence. Refer to your vehicle’s service manual for exact steps or have a technician perform it with a scan tool.
7. Is it safe to drive with a P1226 code on my Infiniti G35?
Driving with this code can be risky as it may cause stalling or reduced engine performance, especially during acceleration. It’s best to address the issue promptly.
8. Can a failing throttle position sensor cause the P1226 code?
Yes, a malfunctioning throttle position sensor can prevent the system from correctly learning the closed throttle position, triggering the code.
9. Will clearing the P1226 code solve the problem?
Clearing the code may temporarily turn off the check engine light, but the issue will likely return unless the root cause is fixed.
10. How much does it cost to repair a P1226 code on a 2004 Infiniti G35?
Repair costs vary but may range from $150 for a throttle body cleaning to $500 or more if the throttle body or electronic components need replacement.
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