P0221 2003 Infiniti G35 Code - Throttle/Pedal Position Sensor Circuit Range/Performance Problem
Quick Answer
Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor (TPS), etc. Common causes include Faulty Electric Throttle Control Actuator, Electric Throttle Control Actuator harness is open or shorted, Electric Throttle Control Actuator 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
- P0221 2003 Infiniti G35 indicates Throttle/Pedal Position Sensor Circuit Range/Performance Problem.
- Common causes
- Common causes include Faulty Electric Throttle Control Actuator, Electric Throttle Control Actuator harness is open or shorted, Electric Throttle Control Actuator 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 P0221 2003 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 P0221 2003 Infiniti G35?
- Faulty Electric Throttle Control Actuator
- Electric Throttle Control Actuator harness is open or shorted
- Electric Throttle Control Actuator poor electrical connection
How to Fix the DTC P0221 2003 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 P0221 2003 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 P0221 2003 Infiniti G35 Code
1. What does the OBDII code P0221 mean on a 2003 Infiniti G35?
P0221 indicates a "Throttle/Pedal Position Sensor Circuit Range/Performance Problem," meaning the ECM detected an issue with the throttle or accelerator pedal position sensor signals.
2. What are the common symptoms of code P0221 in a 2003 Infiniti G35?
Symptoms may include reduced engine power, poor acceleration, hesitation, stalling, or the vehicle entering "limp mode."
3. What causes the P0221 code to appear on a 2003 Infiniti G35?
Common causes include a faulty throttle position sensor (TPS), damaged or corroded wiring in the throttle circuit, a faulty accelerator pedal position sensor, or a failing ECM.
4. Can I still drive my 2003 Infiniti G35 with the P0221 code active?
While the car may still operate, it could have reduced power and hesitation. Driving in this condition can be unsafe and may cause further damage, so addressing the issue promptly is recommended.
5. How do I diagnose the P0221 code on my 2003 Infiniti G35?
Start by using an OBDII scanner to confirm the code. Then inspect the throttle position sensor, accelerator pedal position sensor, and their wiring for damage or corrosion. Testing sensor output with a multimeter may also help.
6. How can I fix the P0221 code on a 2003 Infiniti G35?
Repairs may involve replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning electrical connections, or replacing the accelerator pedal position sensor if faulty.
7. Is a faulty throttle position sensor a common issue for code P0221 on a 2003 Infiniti G35?
Yes, a faulty throttle position sensor is one of the most common causes of the P0221 code.
8. How much does it cost to fix the P0221 code on a 2003 Infiniti G35?
Repair costs vary, but replacing the throttle position sensor typically costs $150–$300 for parts and labor. Wiring repairs may cost less, depending on the extent of damage.
9. Can a dirty throttle body cause the P0221 code on a 2003 Infiniti G35?
While less common, a dirty throttle body can cause issues with throttle position readings, potentially triggering the P0221 code.
10. Does the P0221 code require reprogramming the ECM after repairs on a 2003 Infiniti G35?
In most cases, ECM reprogramming isn't required, but clearing the code with an OBDII scanner and performing a throttle relearn procedure may be necessary.
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