P1306 – OBD-II DTC

OBD-II DTC P1306 – Boost Calibration High

DTC P1306 meaning

DTC P1306 refers to a diagnostic trouble code indicating a “Boost Calibration High” condition in the vehicle’s engine management system. This code is typically associated with turbocharged or supercharged engines where the boost pressure is monitored. The code suggests that the actual boost pressure exceeds the expected calibration values set by the manufacturer, which can lead to performance issues and potential engine damage.

DTC P1306 symptoms

Common symptoms associated with DTC P1306 may include:

• Reduced engine performance
• Check Engine Light illuminated
• Unusual engine noises
• Increased fuel consumption
• Engine stalling or misfiring

DTC P1306 causes

Several factors can trigger DTC P1306, including:

• Faulty boost pressure sensor
• Boost leaks in the intake system
• Malfunctioning turbocharger or supercharger
• Incorrectly calibrated engine control unit (ECU)
• Faulty wastegate or wastegate actuator

DTC P1306 seriousness

DTC P1306 is considered a serious issue as it can lead to significant engine performance problems. If left unaddressed, it may result in engine damage due to excessive boost pressure, which can cause components to fail. It is advisable to diagnose and repair the issue promptly to avoid further complications.

How to diagnose DTC P1306

To diagnose DTC P1306, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1306 code.
2. Inspect the boost pressure sensor and wiring for damage or disconnection.
3. Check for boost leaks in the intake system using a smoke test.
4. Examine the turbocharger or supercharger for proper operation.
5. Verify the calibration of the ECU and ensure it matches the vehicle specifications.
6. Test the wastegate and its actuator for proper function.

How to fix DTC P1306 step-by-step instructions

To fix DTC P1306, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors related to the boost pressure sensor.
3. Replace the boost pressure sensor if it is faulty.
4. Repair any identified boost leaks in the intake system.
5. Service or replace the turbocharger or supercharger if necessary.
6. Recalibrate the ECU if it is found to be incorrect.
7. Test the wastegate and replace it if it is malfunctioning.
8. Recheck the system for any new codes after repairs.

How to erase DTC P1306

To erase DTC P1306, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to ensure the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.