AutoCodes – Ford – P1247 Ford

P1247 Ford 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 Ford 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 56,533

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 Ford 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 Ford - Turbo Boost Pressure Low - AutoCodes.com — P1247 Ford Code - Turbo Boost Pressure Low

What does this mean?

What are the Possible Causes of the DTC P1247 Ford?

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 Ford?

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 Ford 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.

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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 Ford Code

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

- Common symptoms include reduced engine power, poor acceleration, black smoke from the exhaust, and potentially an illuminated check engine light.

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

- Potential causes may include a faulty turbocharger, wastegate issues, boost leaks, a malfunctioning boost pressure sensor, or a clogged air filter.

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

- Diagnosis typically involves checking the turbocharger for damage, inspecting the wastegate for proper operation, testing for boost leaks, and scanning the boost pressure sensor for faults.

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

- Continuing to drive with this code may lead to engine damage due to inadequate air and fuel mixture, so it is recommended to address the issue promptly.

5. How can I repair OBDII code P1247 Ford (Turbo Boost Pressure Low) on my own?

- DIY repair options may include checking and tightening hose connections, replacing a clogged air filter, or cleaning the boost pressure sensor. However, more complex issues may require professional assistance.

6. Is it safe to drive my vehicle with OBDII code P1247 Ford (Turbo Boost Pressure Low)?

- It is not recommended to drive your vehicle with this code active, as it can lead to performance issues and potential engine damage. It's best to address the underlying problem before continuing to drive.

7. Will resetting the OBDII code P1247 Ford (Turbo Boost Pressure Low) make it go away permanently?

- Resetting the code without addressing the root cause will not permanently resolve the issue. The code is likely to reappear until the underlying problem is fixed.

8. How much does it typically cost to repair OBDII code P1247 Ford (Turbo Boost Pressure Low)?

- The cost of repair can vary depending on the specific issue causing the code. It is advisable to get a diagnostic from a trusted mechanic to determine the exact repair cost.

9. Can extreme weather conditions affect OBDII code P1247 Ford (Turbo Boost Pressure Low)?

- Yes, extreme weather conditions can impact the performance of the turbocharger and other components related to boost pressure, potentially triggering this error code.

10. How often should I check my vehicle for signs of OBDII code P1247 Ford (Turbo Boost Pressure Low)?

- It is recommended to regularly monitor your vehicle for any symptoms of reduced turbo boost pressure, such as decreased power or unusual engine sounds, and address them promptly to avoid potential damage.