P1128 2005 Nissan Maxima Code - Throttle Control Motor Circuit Short
Quick Answer
The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Faulty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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
- P1128 2005 Nissan Maxima indicates Throttle Control Motor Circuit Short.
- Common causes
- Common causes include Faulty Throttle Control Motor, Throttle Control Motor harness is open or shorted, Throttle Control Motor 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 P1128 2005 Nissan Maxima Description
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control 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 P1128 2005 Nissan Maxima?
- Faulty Throttle Control Motor
- Throttle Control Motor harness is open or shorted
- Throttle Control Motor circuit poor electrical connection
How to Fix the DTC P1128 2005 Nissan Maxima?
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 P1128 2005 Nissan Maxima 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 P1128 2005 Nissan Maxima Code
1. What does the OBDII code P1128 mean on a 2005 Nissan Maxima?
The P1128 code indicates a throttle control motor circuit short, meaning there is an electrical issue in the circuit controlling the throttle motor.
2. What are the common symptoms of code P1128 in a 2005 Nissan Maxima?
Symptoms may include poor throttle response, the engine going into limp mode, a rough idle, or the check engine light illuminating.
3. What causes P1128 to trigger in a 2005 Nissan Maxima?
Common causes include damaged wiring or connectors in the throttle motor circuit, a faulty throttle control motor, or a malfunctioning ECM.
4. Can a dirty throttle body cause the P1128 code on my Nissan Maxima?
A dirty throttle body itself may not directly cause a short, but excessive dirt or carbon buildup can stress the motor and potentially lead to related issues.
5. How do I diagnose the P1128 code on a 2005 Nissan Maxima?
Diagnose the issue by inspecting the throttle control motor wiring and connectors for damage, testing the throttle motor for proper operation, and checking the ECM for faults.
6. Is it safe to drive with the P1128 code on a 2005 Nissan Maxima?
Driving with this code is not recommended, as it may cause poor performance or limp mode, potentially leading to unsafe driving conditions.
7. What should I check first when fixing the P1128 code?
Start by inspecting the throttle control motor’s wiring and connectors for damage or corrosion, as these are common culprits.
8. How much does it typically cost to fix the P1128 code on a 2005 Nissan Maxima?
Repair costs vary, but fixing wiring or connectors may cost $100–$300, while replacing the throttle motor or ECM could cost $500–$1,500 depending on labor rates.
9. Can a bad battery cause the P1128 code on my Nissan Maxima?
A weak or failing battery can sometimes cause electrical issues, but it is not a common cause of this specific code.
10. Will clearing the code fix the P1128 issue permanently?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.
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