The OBD2 code P2565 indicates a problem with the Turbo Boost Control Position Sensor (TBCPS) Circuit, specifically that the signal being sent to the Engine Control Module (ECM) is too high. This sensor is crucial for managing the turbocharger’s boost in turbocharged vehicles, and adjusting the engine’s air intake to optimize performance and fuel efficiency.
When the circuit’s signal is too high, it suggests a potential fault in the sensor, its wiring, or an issue with the ECM’s ability to read the sensor correctly. This can lead to noticeable symptoms such as reduced engine performance, hesitation during acceleration, and decreased fuel economy.
P2565 quick overview
| Meaning | P2565: Turbo Boost Control Position Sensor Circuit High |
| Is it serious? | Yes, this code can significantly impact the vehicle’s performance and fuel efficiency. |
| Possible causes | – Faulty Turbo Boost Control Position Sensor – Damaged or corroded wiring or connectors – Poor electrical connections – Fault in the ECM (less common) |
| How to diagnose? | Look for Technical Service Bulletins (TSBs) for any known issues and solutions. Visually inspect the TBCPS sensor, wiring, and connectors for damage or corrosion. Clean and protect connector terminals with electrical contact cleaner and grease. Test the TBCPS sensor and circuits with a Digital Voltmeter for proper operation. Replace the TBCPS sensor or PCM after confirming the fault through testing. |
P2565 Meaning
Imagine your vehicle’s turbo system as a sprinter needing the right amount of energy (air) to perform at its best. The Turbo Boost Control Position Sensor is like the coach, telling the sprinter how much energy to use. When P2565 pops up, it’s like the coach is shouting too loudly (circuit too high), confusing the sprinter and affecting their performance.
This can make your car feel sluggish, like it’s hesitating to speed up when you want it to, and you might notice you’re filling up the tank more often. Addressing this issue involves checking the coach’s instructions (sensor and circuit) and making sure they’re clear and at the right volume for optimal performance.
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How to fix P2565 – learn from mechanics
I looked into P2565 service cases at iatn.com website where in the private forums the mechanics seek advice from other mechanics. I looked up a bunch of cases to help you decide how to fix your issue and see what would a real mechanic do to solve it.
Case #1: Hyundai
Vehicle information 2013 Hyundai Sonata 2.0T
Issue + repair history
- Vehicle diagnosed with OBD2 code P2565 (Turbo Boost Control Position Sensor Circuit High).
- Symptoms include Malfunction Indicator Light On, poor performance, hesitation during acceleration, and decrease in fuel economy.
- No prior repair history related to this issue.
Other OBD2 Codes + Test Results
- OBD2 Code: P2565 (Turbo Boost Control Position Sensor Circuit High).
Mechanic suggestions
- Check technical service bulletins (TSB) for known issues with fixes provided by the manufacturer.
- Visually inspect the TBCPS sensor, connector, and wiring for any signs of damage or corrosion.
- Use electrical contact cleaner and apply electrical grease to clean and protect the connector terminals.
- Test the TBCPS sensor and associated circuits using a Digital Voltmeter to check for power, ground, and signal wire integrity.
- If necessary, replace the TBCPS sensor or PCM after thorough testing.
Final fix
- The issue was resolved by replacing the TBCPS sensor, ensuring proper calibration to the vehicle during installation.
Case #2: Kia
Vehicle information 2012 Kia Optima SX Turbo
Issue + repair history
- OBD2 code P2565 (Turbo Boost Control Position Sensor Circuit High) detected.
- Symptoms include Malfunction Indicator Light On, poor performance, hesitation during acceleration, and decrease in fuel economy.
- No prior repair history related to this issue.
Other OBD2 Codes + Test Results
- OBD2 Code: P2565 (Turbo Boost Control Position Sensor Circuit High).
Mechanic suggestions
- Consult technical service bulletins (TSB) for potential fixes issued by the manufacturer.
- Perform a visual inspection of the TBCPS sensor, connector, and wiring for signs of damage or corrosion.
- Clean and protect the connector terminals with electrical contact cleaner and grease.
- Test the TBCPS sensor and its circuits using a Digital Voltmeter to ensure proper voltage readings.
- Replace the TBCPS sensor or PCM if necessary after thorough testing.
Final fix
- Replacing the TBCPS sensor resolved the issue, ensuring proper calibration to the vehicle during installation.
Case #3: Ford
Vehicle information 2015 Ford Focus ST
Issue + repair history
- OBD2 code P2565 (Turbo Boost Control Position Sensor Circuit High) diagnosed.
- Symptoms include Malfunction Indicator Light On, poor performance, hesitation during acceleration, and decrease in fuel economy.
- No prior repair history related to this issue.
Other OBD2 Codes + Test Results
- OBD2 Code: P2565 (Turbo Boost Control Position Sensor Circuit High).
Mechanic suggestions
- Refer to technical service bulletins (TSB) for potential solutions provided by the manufacturer.
- Inspect the TBCPS sensor, connector, and wiring for any damage or corrosion visually.
- Clean and apply electrical grease to the connector terminals for protection.
- Utilize a Digital Voltmeter to test the TBCPS sensor and its circuits, ensuring proper voltage readings.
- Replace the TBCPS sensor or PCM if necessary after comprehensive testing.
Final fix
- Replacement of the TBCPS sensor resolved the issue, ensuring correct calibration during installation.
How to diagnose P2565
I made you an overview of solving this DTC, based on all the advice that was suggested by certified mechanics to address this issue in previously mentioned service cases.
| Diagnostic Step | Brief Explanation |
|---|---|
| Consult TSBs | Look for manufacturer-issued solutions to known issues. |
| Inspect TBCPS and connections | Check for physical damage or corrosion that could affect signal integrity. |
| Clean and protect connections | Use electrical contact cleaner and grease to improve connection quality. |
| Test sensor and circuits | Use a voltmeter to verify proper voltage and grounding of the TBCPS circuit. |
| Replace faulty components | If diagnostics confirm, replace the TBCPS sensor or PCM to ensure correct operation. |
These steps, distilled from the experiences of handling P2565 across different vehicle brands, underscore the importance of thorough inspection and precise diagnostics. By addressing the issue systematically, you can restore your vehicle’s turbocharger system to its optimal performance, ensuring both power and efficiency are maximized.
Car Diagnostics Training
- Car Electrical basics
- OBD-II scanner basics
- How to use an OBD reader
- Introduction to a Bi-directional Scan tool
- OBD scanner buyer’s guide + discounts
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko