B272F Code - Passenger Ignition Run/Blower Circuit Short To Ground
Quick Answer
The Seat Control Module E (SCME) supplies voltage and ground to the backrest and cushion blower motors. Common causes include Faulty Passenger Cushion or Backrest Blower Motor, Passenger Cushion or Backrest Blower Motor harness is open or shorted, Passenger Cushion or Backrest Blower Motor circuit poor electrical connection. 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
- B272F indicates Passenger Ignition Run/Blower Circuit Short To Ground.
- Common causes
- Common causes include Faulty Passenger Cushion or Backrest Blower Motor, Passenger Cushion or Backrest Blower Motor harness is open or shorted, Passenger Cushion or Backrest Blower Motor circuit poor electrical connection.
- 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.
Code B272F Description
If either the blower voltage supply or return circuits are open (to both cushion or backrest blowers) or shorted to voltage, the Diagnostic Trouble Code (DTC) is set and after 4-6 seconds the SCME disables outputs to the passenger seat. The DTC also sets if the blower voltage supply or return circuit is open to only one blower when SCME supply voltage is less than 12 volts.
What are the Possible Causes of the DTC B272F?
- Faulty Passenger Cushion or Backrest Blower Motor
- Passenger Cushion or Backrest Blower Motor harness is open or shorted
- Passenger Cushion or Backrest Blower Motor circuit poor electrical connection
- Faulty Seat Control Module E (SCME)
How to Fix the DTC B272F?
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 B272F 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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Information for Specific Makes
- B272F Ford — Passenger Ignition Run/Blower Circuit Short To Ground
- B272F Lincoln — Passenger Ignition Run/Blower Circuit Short To Ground
- B272F Mercury — Passenger Ignition Run/Blower Circuit Short To Ground
Frequently Asked Questions about B272F Code
1. What are the common symptoms of OBDII code B272F (Passenger Ignition Run/Blower Circuit Short To Ground)?
- Common symptoms include a non-functioning blower motor, loss of power to the blower motor, and potential issues with the passenger-side ignition run circuit.
2. What are the possible causes of OBDII code B272F?
- The code B272F can be caused by a short to ground in the passenger ignition run/blower circuit, damaged wiring, a faulty blower motor, or a problem with the blower motor control module.
3. How can I diagnose OBDII code B272F?
- Diagnosis typically involves checking the wiring harness for any visible damage, testing the blower motor and control module for functionality, and using a multimeter to check for shorts to ground in the circuit.
4. Can I still drive my vehicle with OBDII code B272F?
- It is not recommended to drive your vehicle with this code as it may lead to further electrical issues and potential safety hazards due to the malfunctioning blower motor.
5. How do I repair OBDII code B272F?
- Repairing code B272F may involve repairing or replacing damaged wiring, replacing the blower motor or control module if necessary, and clearing the code from the vehicle's computer using an OBDII scanner.
6. Are there any preventive measures to avoid OBDII code B272F in the future?
- Regularly inspecting the blower motor circuit for any signs of wear or damage, ensuring proper installation of components, and addressing any electrical issues promptly can help prevent code B272F from occurring.
7. Can a DIY enthusiast fix OBDII code B272F, or is professional help required?
- Depending on your level of automotive knowledge and experience with electrical systems, some DIY enthusiasts may be able to diagnose and repair code B272F themselves. However, professional help is recommended for those not familiar with electrical troubleshooting.
8. How long does it typically take to repair OBDII code B272F?
- The repair time for code B272F can vary depending on the extent of the issue and the availability of replacement parts. In general, it may take anywhere from a few hours to a full day to diagnose and repair the problem.
9. Will fixing OBDII code B272F be expensive?
- The cost of repairing code B272F can vary based on factors such as the need for replacement parts, labor charges, and whether professional help is sought. It is recommended to obtain quotes from different repair shops to compare costs.
10. Is it safe to reset the OBDII code B272F without fixing the underlying issue?
- Resetting the code without addressing the root cause may temporarily clear the warning light, but the underlying issue will persist and could lead to further problems. It is important to fix the problem causing the code to prevent future issues.
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