P1121 2004 Infiniti G35 Code - Electric Throttle Control Actuator
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 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
- P1121 2004 Infiniti G35 indicates Electric Throttle Control Actuator.
- Common causes
- Common causes include Faulty Electric Throttle Control Actuator, Electric Throttle Control Actuator harness is open or shorted, Electric Throttle Control Actuator 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 P1121 2004 Infiniti G35 Description
The throttle position sensor detects the throttle valve position, and the opening and closing speed of the throttle valve and feeds 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 P1121 2004 Infiniti G35?
- Faulty Electric Throttle Control Actuator
- Electric Throttle Control Actuator harness is open or shorted
- Electric Throttle Control Actuator circuit poor electrical connection
How to Fix the DTC P1121 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 P1121 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 P1121 2004 Infiniti G35 Code
1. What does the OBDII code P1121 mean on a 2004 Infiniti G35?
P1121 indicates a problem with the Electric Throttle Control Actuator, specifically a fault in its performance or the sensor circuit.
2. What are the common symptoms of code P1121 on a 2004 Infiniti G35?
Symptoms can include poor acceleration, unstable idle, engine hesitation, and the Check Engine Light being illuminated.
3. What causes the P1121 code on a 2004 Infiniti G35?
Common causes include a faulty throttle body, damaged throttle position sensor, wiring or connector issues, or a malfunctioning ECM.
4. Can I drive my 2004 Infiniti G35 with the P1121 code?
Driving with this code is not recommended as it may lead to reduced engine performance and potential safety issues.
5. How is the P1121 code diagnosed on a 2004 Infiniti G35?
A technician will use a scan tool to read the code, inspect the throttle body, check wiring and connectors, and test the throttle position sensor.
6. Can cleaning the throttle body fix the P1121 code on a 2004 Infiniti G35?
In some cases, cleaning carbon buildup in the throttle body can resolve the issue if the problem is caused by dirt or debris.
7. How much does it cost to repair the P1121 code on a 2004 Infiniti G35?
Repair costs vary but typically range from $150 to $500, depending on whether the throttle body or sensor needs replacement.
8. Does the P1121 code mean I need a new throttle body?
Not always. The issue could be with the sensor, wiring, or even a loose connection. Proper diagnosis is necessary.
9. Can a bad battery cause the P1121 code on a 2004 Infiniti G35?
A weak or failing battery can sometimes cause electrical issues, but it’s not a common cause for this specific code.
10. How do I prevent the P1121 code from returning on my 2004 Infiniti G35?
Regular maintenance, such as cleaning the throttle body and inspecting wiring, can help prevent this issue.
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