AutoCodes – Generic – P1247

P1247 Code - Turbo Boost Pressure Low

Quick Answer

The boost pressure sensor responds to pressure changes in the intake manifold. Common causes include Damaged MAP hose, Low turbo boost, Intake manifold or crossover tube hose leaks. 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: P1247 indicates Turbo Boost Pressure Low.
Common causes: Common causes include Damaged MAP hose, Low turbo boost, Intake manifold or crossover tube hose leaks.
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.

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Code Popularity 40,798

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1247 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 P1247 - Turbo Boost Pressure Low - AutoCodes.com — P1247 Code - Turbo Boost Pressure Low

What does this mean?

What are the Possible Causes of the DTC P1247?

Damaged MAP hose
Low turbo boost
Intake manifold or crossover tube hose leaks
Faulty MAP sensor
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1247?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1247 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1247 code?

Need more information on how to fix the P1247 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1247 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1247 Acura — Accelerator Pedal Position Sensor 2 Circuit Malfunction
P1247 Audi — Needle Lift Sensor Circuit Open/Short To Positive
P1247 Buick — Fuel Injector 8 Control Circuit Shorted
P1247 Cadillac — Fuel Injector 8 Control Circuit Shorted
P1247 Chevrolet — Fuel Injector 8 Control Circuit Shorted
P1247 Ford — Turbo Boost Pressure Low
P1247 GMC — Fuel Injector 8 Control Circuit Shorted
P1247 Honda — Accelerator Pedal Position Sensor 2 Circuit Malfunction
P1247 Isuzu — Low Fuel Pressure Regulator Circuit Low Voltage
P1247 Mitsubishi — A/T Plausibility
P1247 Saab — Intake Manifold Air Control Solenoid Inner Flap Open Circuit/Short To Positive
P1247 Volkswagen — Needle Lift Sensor Circuit Open/Short To Positive

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.

Frequently Asked Questions about P1247 Code

1. What are the common symptoms of OBDII code P1247 (Turbo Boost Pressure Low)?

- Common symptoms include a lack of power or acceleration, reduced fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1247 (Turbo Boost Pressure Low)?

- Potential causes can include a faulty turbocharger, wastegate issues, boost leaks, clogged air filters, or malfunctioning sensors.

3. How can I diagnose the root cause of OBDII code P1247 (Turbo Boost Pressure Low)?

- Diagnosis involves checking the turbocharger, wastegate, intercooler, hoses, air filters, and sensors for any signs of damage, leaks, or malfunctions.

4. Can driving with OBDII code P1247 (Turbo Boost Pressure Low) cause further damage to my vehicle?

- Continuing to drive with this code can potentially lead to decreased engine performance, increased fuel consumption, and further damage to the turbocharger components.

5. What are some DIY repair tips for addressing OBDII code P1247 (Turbo Boost Pressure Low)?

- DIY repair tips include checking and cleaning air filters, inspecting for boost leaks, ensuring proper wastegate function, and verifying sensor readings.

6. When should I seek professional help for OBDII code P1247 (Turbo Boost Pressure Low)?

- It's advisable to seek professional assistance if you are unsure about diagnosing or repairing the turbocharger system, as specialized tools and knowledge may be required.

7. Is it safe to reset the OBDII code P1247 (Turbo Boost Pressure Low) and continue driving without addressing the underlying issue?

- Resetting the code without addressing the root cause is not recommended, as the problem will persist and potentially lead to more severe issues over time.

8. How much does it typically cost to repair OBDII code P1247 (Turbo Boost Pressure Low) at a mechanic or dealership?

- Repair costs can vary depending on the specific cause of the issue, but expect to pay anywhere from $200 to $1000 or more for parts and labor.

9. Are there any preventive measures to avoid OBDII code P1247 (Turbo Boost Pressure Low) in the future?

- Regular maintenance, such as replacing air filters, checking for leaks, and ensuring proper turbocharger function, can help prevent issues that trigger this code.

10. Can extreme weather conditions impact the likelihood of triggering OBDII code P1247 (Turbo Boost Pressure Low)?

- Yes, extreme cold or hot weather can affect turbocharger performance and increase the likelihood of triggering this code, especially if the system is not well-maintained.