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AutoCodes - Generic - P1248

P1248 Code - Turbo Boost Pressure Not Detected

- Code Popularity: 40,666 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1248?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Damaged MAP hose
  • Low turbo boost
  • Intake manifold or crossover tube hose leaks
  • Faulty MAP sensor
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P1248?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1248 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1248 Description

The boost pressure sensor responds to pressure changes in the intake manifold. This pressure is created by the turbocharger and changes with Accelerator Pedal Position (APP) and engine speed. The Powertrain Control Module (PCM) uses this information to assist in diagnosis of the barometric pressure (BARO) sensor and to provide engine overboost protection. The boost pressure sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The PCM supplies 5 volts to the boost pressure sensor on the 5-volt reference 2 circuit, and provides a ground on a low reference circuit. The boost pressure sensor provides a signal to the PCM on a signal circuit relative to the pressure changes. The PCM monitors the boost pressure sensor signal for voltage outside of the normal range. The PCM calculates a predicted value for the boost pressure sensor. The PCM then compares the predicted value to the actual signal.
OBDII Code P1248 - Turbo Boost Pressure Not Detected - AutoCodes.com
P1248 Code - Turbo Boost Pressure Not Detected

Need More Information on the Code?

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Information for Specific Makes

  • P1248 Acura Accelerator Pedal Position Sensor 1 and 2 Incorrect correlation
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  • 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  

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