P1511 Code - Throttle Control System Backup System Performance
Quick Answer
The Engine Control Module (ECM) is the control center for the Throttle Actuator Control (TAC) system. Common causes include Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open or shorted, Throttle Actuator 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
- P1511 indicates Throttle Control System Backup System Performance.
- Common causes
- Common causes include Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open or shorted, Throttle Actuator 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 P1511 Description
Motor control 1
Motor control 2
Two processors are also used to monitor the TAC system data. Both processors are located within the ECM. Both processors monitor each other's data to verify that the indicated throttle position is correct.
What are the Possible Causes of the DTC P1511?
- Faulty Throttle Actuator Control Motor
- Throttle Actuator Control Motor harness is open or shorted
- Throttle Actuator Control Motor circuit poor electrical connection
How to Fix the DTC P1511?
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 P1511 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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Information for Specific Makes
- P1511 Audi — Intake Manifold Changeover Valve Electrical Malfunction In Circuit
- P1511 BMW — DISA Control Circuit Electrical
- P1511 Buick — Throttle Control System Backup System Performance
- P1511 Cadillac — Throttle Control System Backup System Performance
- P1511 Chevrolet — Throttle Control System Backup System Performance
- P1511 GMC — Throttle Control System Backup System Performance
- P1511 Hyundai — Idle Speed Control Circuit Open/Short
- P1511 KIA — Idle Air Control Valve Coil 2 Circuit Malfunction
- P1511 MINI — DISA Control Circuit Electrical
- P1511 Subaru — Idle Air Control Solenoid Valve Signal 1 Circuit High Input
- P1511 Suzuki — Main Throttle Actuator Circuit Malfunction
- P1511 Toyota — Boost Pressure Low
- P1511 Volkswagen — Intake Manifold Changeover Valve Electrical Malfunction In Circuit
Frequently Asked Questions about P1511 Code
1. What are common symptoms associated with OBDII code P1511 (Throttle Control System Backup System Performance)?
- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P1511?
- Possible causes include a faulty throttle control motor, damaged wiring or connectors in the throttle control system, or a malfunctioning throttle body.
3. How can I diagnose the issue related to OBDII code P1511?
- Diagnosis typically involves using a scan tool to retrieve the code, checking the throttle control system components for damage or wear, and testing the throttle control motor for proper operation.
4. Can I drive my vehicle with OBDII code P1511 present?
- It is not recommended to drive your vehicle with code P1511 present, as it can lead to unsafe driving conditions and potential damage to the engine or other components.
5. How can I repair OBDII code P1511?
- Repairing code P1511 may involve replacing the throttle control motor, repairing or replacing damaged wiring or connectors, or cleaning and calibrating the throttle body.
6. Are there any DIY tips for fixing OBDII code P1511?
- DIY tips include checking for loose or damaged connections in the throttle control system, cleaning the throttle body to remove any carbon buildup, and ensuring the throttle control motor is functioning properly.
7. Can a dirty throttle body cause OBDII code P1511?
- Yes, a dirty throttle body can restrict airflow and cause code P1511 to trigger due to improper throttle control system performance.
8. Is OBDII code P1511 a serious issue?
- OBDII code P1511 should be addressed promptly to prevent further damage to the throttle control system or engine, as it can impact vehicle performance and drivability.
9. Will resetting the Check Engine Light resolve OBDII code P1511?
- Resetting the Check Engine Light may temporarily clear the code, but it is not a permanent solution. The underlying issue causing code P1511 needs to be diagnosed and repaired.
10. How much does it cost to fix OBDII code P1511 at a repair shop?
- The cost to fix OBDII code P1511 at a repair shop can vary depending on the specific cause of the issue, but it may range from $200 to $500 or more including parts and labor.
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