The OBD2 code P2562 indicates a problem with the Turbocharger Boost Control Position Sensor Circuit. This sensor plays a crucial role in monitoring the position of the turbocharger’s wastegate, helping to regulate the engine’s boost pressure for optimal performance. When this circuit malfunctions, it can lead to symptoms like loss of power, a burning smell from electrical issues, or even stalling, as seen in the discussed service cases.
P2562 quick overview
| Meaning | P2562 – Turbocharger Boost Control Position Sensor Circuit |
| Is it serious? | Yes, because it can significantly affect engine performance and potentially lead to engine damage if not addressed. |
| Possible causes | – Faulty boost control position sensor – Wiring or connector issues in the sensor circuit – Vacuum leaks affecting the turbo system – Malfunctioning turbocharger wastegate |
| How to diagnose? | Inspect the boost control position sensor and its connectors for damage or corrosion Check the wiring harness for shorts, opens, or signs of wear Test the turbocharger system for leaks or blockages Evaluate the wastegate actuator with a vacuum test to ensure it operates correctly Consult technical service bulletins for known issues and fixes related to the turbo system |
P2562 Meaning
For those who might not be car savvy, think of the turbocharger as a pump that forces more air into the engine to boost its power. The boost control position sensor is like a monitor that watches how much this pump opens or closes to let the right amount of air in.
If there’s an issue with the sensor or its circuit, as indicated by the P2562 code, your car might not accelerate as expected, or you might notice other unusual symptoms like a burning smell. It’s similar to having a broken gauge on a bike pump; without knowing how much air you’re putting in, it’s easy to underinflate or overinflate the tires.
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How to fix P2562 – learn from mechanics
I looked into P2562 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: Kia
Vehicle Information 2012 Kia Optima SX 2.0L
Issue + Repair History
- Experienced a burning smell of electrical wires and stalled while driving at 55 MPH.
- Checked fuses, all found to be intact.
- Interior fuse box only has 3 fuses with power when the key is on.
- Dashboard lights up, but radio and heater controls take 10 seconds to power up, a symptom also observed by the customer last winter in cold weather.
- Diagnostic trouble codes (DTCs) P2562 and P2565 related to the turbo wastegate were retrieved.
- Antenna tests (antenna 1 and 2) failed.
Other OBD2 Codes + Test Results
- P2562 (Turbocharger Boost Control Position Sensor Circuit)
- P2565 (Turbocharger Boost Control Position Sensor Circuit High)
Mechanic Suggestions
- Inspect the interior fuse box, particularly the 3-wire connector near the bottom front for burnt terminals, as it supplies power to many components.
- Determine the cause of the vehicle stalling while driving, checking for fuel pressure, spark, and engine cranking.
- Investigate potential issues with the alternator and ensure all fuses are checked with all accessories hooked to a charger.
- Utilize a wiring diagram to trace where power loss occurs to the interior fuse box and identify the affected circuits.
- Follow up with the dealer’s diagnosis and repair solution.
- Request a customer follow-up once the issue is diagnosed and resolved.
Final Fix
- The vehicle was sent to Kia for further diagnosis. The starter did not engage, and it was discovered that the three main big wires to the interior fuse block had power. It was speculated that the smart key module might be faulty.
Case #2: Skoda
Vehicle Information 2018 Skoda Rapid 1.4 TSI
Issue + Repair History
- Customer reported loss of power and check engine light illuminated.
- Diagnostic scan revealed DTC P2562 stored in the PCM memory.
- No previous repair history related to this specific fault code.
Other OBD2 Codes + Test Results
- P2562 (Turbocharger Boost Control Position Sensor Circuit)
- No additional fault codes detected.
- Live data showed erratic boost pressure readings.
Mechanic Suggestions
- Checked turbocharger system for any signs of leaks, damage, or loose connections.
- Inspected turbocharger boost control solenoid and verified proper operation.
- Conducted a thorough examination of the wiring harness and connectors associated with the boost control position sensor.
- Performed a vacuum test on the wastegate actuator to ensure it was functioning correctly.
- Reviewed technical service bulletins and manufacturer guidelines related to turbocharger system diagnostics and repairs.
Final Fix
- Discovered a loose connector at the boost control position sensor.
- Reconnected the connector securely and cleared the fault code.
- Conducted a road test to verify that the power loss issue was resolved.
- Customer confirmed that the vehicle was performing optimally, and the check engine light did not reappear.
Case #3: Volkswagen
Vehicle Information 2016 Volkswagen Golf GTI 2.0L Turbo
Issue + Repair History
- Customer experienced intermittent loss of power during acceleration.
- Diagnostic scan revealed DTC P2562 stored in the PCM memory.
- No history of previous repairs related to this fault code.
Other OBD2 Codes + Test Results
- P2562 (Turbocharger Boost Control Position Sensor Circuit)
- No additional fault codes detected.
- Live data showed inconsistent boost pressure readings.
Mechanic Suggestions
- Inspected turbocharger system for any signs of damage, leaks, or blockages.
- Tested turbocharger boost control solenoid and verified proper function.
- Examined wiring harness and connectors associated with the boost control position sensor for any signs of damage or corrosion.
- Conducted a vacuum test on the wastegate actuator to ensure it was responding appropriately.
- Reviewed manufacturer’s diagnostic procedures and technical bulletins related to turbocharger system diagnostics.
Final Fix
- Discovered a damaged wire in the wiring harness leading to the boost control position sensor.
- Repaired the damaged wire and ensured all connections were secure.
- Cleared fault code and performed a road test to confirm proper turbocharger operation.
- Customer reported no further issues with power loss, and the vehicle’s performance was restored to normal.
How to diagnose P2562
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 | Explanation |
|---|---|
| Inspect the boost control position sensor and connectors | Look for damage or corrosion that could impair sensor function. |
| Check the wiring harness | Search for electrical faults that might affect the sensor circuit. |
| Test the turbocharger system | Identify leaks, blockages, or other issues affecting turbo performance. |
| Evaluate the wastegate actuator | Use a vacuum test to check if the wastegate operates correctly. |
| Consult technical service bulletins | Review manufacturer advisories for known issues and recommended fixes. |
Addressing a P2562 code often involves a mix of electrical diagnostics and mechanical checks to ensure the turbocharger system operates efficiently. Given the complexity of turbo systems, seeking professional assistance is advisable to accurately diagnose and rectify the issue, preventing further engine performance problems.
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