The P2564: Turbocharger Boost Control Position Sensor ‘A’ Circuit Low refers to a situation where the voltage or signal from the turbocharger boost control position sensor ‘A’ is lower than expected. This condition could be caused by a faulty sensor, issues with the wiring or connectors, or an open circuit. It is crucial to resolve this to ensure that the turbocharger functions correctly, maintaining optimal engine performance.
P2564 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2564: Turbocharger Boost Control Position Sensor ‘A’ Circuit Low |
| Is it serious? | Yes, a low signal from the boost position sensor can prevent accurate control of boost pressure, affecting engine performance and potentially causing damage. |
| Possible causes | – Low voltage or signal in the turbocharger boost control position sensor ‘A’ circuit – Faulty turbocharger boost control position sensor ‘A’ – Wiring or connector issues |
| How to diagnose? | – Measure the voltage in the turbocharger boost control position sensor ‘A’ circuit – Inspect and test the turbocharger boost control position sensor ‘A’ – Check wiring and connectors – Replace faulty components if needed |
P2564 Meaning
The P2564: Turbocharger Boost Control Position Sensor ‘A’ Circuit Low code indicates that the voltage from the turbocharger boost control position sensor ‘A’ is below the expected range. This could be due to a fault in the sensor, a disconnected wire, or a short to ground. The turbocharger relies on this sensor to accurately position its actuator to manage boost pressure, and any issues can lead to poor engine power output, inefficient combustion, and possible engine damage.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Related Codes | Use an OBD-II scanner to determine if there are any other related fault codes. Additional codes can help identify whether other components are involved in the issue. | OBD-II Scanner |
| Measure Voltage in Turbocharger Boost Control Position Sensor ‘A’ Circuit | Use a multimeter to measure the voltage output from the boost control position sensor ‘A’. Compare the reading to the manufacturer’s specification. If the voltage is low, further inspection is needed to determine the cause. | Multimeter |
| Inspect the Turbocharger Boost Control Position Sensor ‘A’ | Visually inspect the sensor for any physical damage, corrosion, or wear that could be impacting its function. Ensure the sensor is properly installed and connected. | Flashlight, Safety Gloves |
| Test the Turbocharger Boost Control Position Sensor ‘A’ | Use a diagnostic tool to assess whether the sensor’s output matches expected values when the turbocharger is operating. Verify if the sensor provides consistent readings as boost levels change. | Diagnostic Tool, Multimeter |
| Check Wiring and Connectors | Inspect all wiring and connectors leading to and from the turbocharger boost control position sensor ‘A’. Look for signs of loose connections, frayed wires, or corrosion that could be contributing to the low voltage condition. | Flashlight, Multimeter |
| Repair or Replace Faulty Wiring/Connectors | Repair any damaged wires or replace faulty connectors. Ensure that all connections are tight, secure, and free from corrosion to prevent further voltage drops. | Basic Tools, Replacement Parts |
| Replace Faulty Turbocharger Boost Control Position Sensor ‘A’ | If the sensor is found to be defective after testing, replace it with a new unit. Make sure the replacement sensor is calibrated correctly for proper turbocharger function. | Replacement Turbocharger Boost Control Sensor |
| Clear the Code and Test Drive | After completing repairs, clear the fault code using an OBD-II scanner. Conduct a test drive while monitoring turbocharger operation to ensure that the sensor is functioning properly and that no codes return. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | Re-scan the vehicle to confirm that the P2564 code has been resolved. If the code persists, further diagnostics may be needed to determine any ongoing issues. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)