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Engine-Codes – Generic – P1248

P1248 Code - Turbo Boost Pressure Not Detected

Quick Answer

The diagnostic trouble code P1248 refers to "Turbo Boost Pressure Not Detected." This code indicates that the engine control module (ECM) has detected a lack of boost pressure from the turbocharger system. Common causes include Malfunctioning turbocharger, Wastegate issues, Boost control solenoid failure. 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
P1248 indicates Turbo Boost Pressure Not Detected.
Common causes
Common causes include Malfunctioning turbocharger, Wastegate issues, Boost control solenoid failure.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1248 Description

The diagnostic trouble code P1248 refers to "Turbo Boost Pressure Not Detected." This code indicates that the engine control module (ECM) has detected a lack of boost pressure from the turbocharger system. The turbocharger is a key component in forced induction systems, which are designed to increase engine power and efficiency by compressing air entering the engine. When the turbo boost pressure is not detected, it can lead to a decrease in engine performance, fuel economy, and overall drivability of the vehicle.

OBDII Code P1248 - Turbo Boost Pressure Not Detected
P1248 Code - Turbo Boost Pressure Not Detected

Common Causes of P1248

  1. Malfunctioning turbocharger
  2. Wastegate issues
  3. Boost control solenoid failure
  4. Intercooler leaks
  5. Faulty engine control module

Symptoms of P1248

  1. Loss of power or acceleration
  2. Engine hesitation or surging
  3. Decreased fuel efficiency
  4. Illuminated check engine light
  5. Increased exhaust emissions

How to Fix P1248

  1. Check for any visible signs of damage or leaks in the turbocharger system, including hoses, intercooler, and connections.
  2. Test the wastegate and boost control solenoid for proper operation and replace if necessary.
  3. Use a scan tool to monitor boost pressure readings and diagnose any discrepancies.
  4. Inspect the engine control module for any fault codes or issues that may be affecting the turbo boost pressure.
  5. Clear the diagnostic trouble code and road test the vehicle to ensure proper boost pressure is restored.

Cost to Fix P1248

The cost of repairing the turbo boost pressure not detected issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the repair cost for this type of issue can range from $200 to $1000 or more, including parts and labor. It's important to consider the specific diagnosis time and labor rates at auto repair shops, which can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to obtain multiple quotes from reputable auto repair shops to ensure a fair and accurate estimate for the repair.

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Code P1248 Information for Specific Makes

  • P1248 Acura — Accelerator Pedal Position Sensor 1 and 2 Incorrect correlation
  • P1248 Audi — Start Of Cold Start Injector Control Difference
  • P1248 Buick — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
  • P1248 Cadillac — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
  • P1248 Chevrolet — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
  • P1248 Ford — Turbo Boost Pressure Not Detected
  • P1248 GMC — Injector 1 Positive Voltage Control Circuit Shorted to Control Circuit
  • P1248 Honda — Accelerator Pedal Position Sensor 1 and 2 Incorrect correlation
  • P1248 Isuzu — Fuel Pump Relay Control Circuit Open
  • P1248 Mitsubishi — AWD Plausibility
  • P1248 Volkswagen — Start Of Cold Start Injector Control Difference
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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  • Great explanation. Useless answer though, because someone forgot to mention which car that explanation belongs with (P1248 is different on all makes)

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