B0248 - Understanding DTC B0248: A Comprehensive Guide for Ford and Chevrolet Owners

Quick Answer

B0248 means: B0248 indicates a malfunction in the A/C refrigerant pressure sensor.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B0248? Address this code promptly to prevent further A/C system damage.

Common Questions

What does B0248 mean and how does it affect my car?

B0248 indicates a malfunction in the A/C refrigerant pressure sensor. This can lead to inadequate cooling, making your driving experience uncomfortable, especially in hot weather. If left unaddressed, it may lead to further damage to the A/C system.

What are the most common causes of B0248 and how much does it cost to fix?

The typical causes of B0248 include a faulty refrigerant pressure sensor, low refrigerant levels due to leaks, and a malfunctioning A/C compressor. Repair costs can range from $150 to $600, depending on the required repairs and parts.

Can I drive my car with B0248 or should I stop immediately?

While it may be possible to drive your vehicle with the B0248 code, it is not advisable. Doing so can lead to further damage to the A/C system, which may increase repair costs and affect your comfort while driving.

How can I diagnose B0248 myself using GeekOBD APP?

To diagnose B0248 using the GeekOBD APP, connect the app to your vehicle's OBD2 port, retrieve the trouble codes, and check for freeze frame data. This information will help you understand the conditions under which the code was triggered.

What vehicles are most commonly affected by B0248?

The B0248 code is commonly found in vehicles like the 2015-2018 Ford F-150 and the 2017 Chevrolet Silverado. These models have been known to experience issues related to the A/C refrigerant pressure sensor.

How can I prevent B0248 from happening again?

To prevent B0248 from recurring, ensure regular maintenance of your A/C system, including checking refrigerant levels and inspecting for leaks. Using the GeekOBD APP for periodic diagnostics can also help catch issues early.

What is B0248?

The B0248 diagnostic trouble code indicates a problem within the vehicle's air conditioning (A/C) system, specifically related to the A/C refrigerant pressure sensor. When the vehicle's onboard computer detects an irregular signal from the refrigerant pressure sensor, it triggers the B0248 code to alert the driver. This can lead to a range of issues, such as insufficient A/C cooling or complete system failure. For owners of vehicles like the 2015 Ford F-150 or the 2017 Chevrolet Silverado, understanding this code is crucial for maintaining comfort and safety. Ignoring the B0248 code can result in further damage to the A/C system, leading to more expensive repairs down the line. Common symptoms associated with this code include the A/C not blowing cold air, frequent cycling of the A/C compressor, or the A/C system shutting down entirely. Addressing this issue promptly can help restore A/C functionality and ensure a comfortable driving experience, especially during hot weather.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0248 is present:

  • The A/C system fails to provide cold air, leading to uncomfortable cabin temperatures during hot weather.
  • Frequent cycling of the A/C compressor may be observed, causing inconsistent cooling performance.
  • A noticeable decrease in overall A/C efficiency, potentially leading to an increase in cabin humidity levels.
  • The dashboard A/C control lights may flash or illuminate warning indicators.
  • In some cases, the vehicle may exhibit unusual noises from the A/C compressor or surrounding components.

Possible Causes

Most common causes of B0248 (ordered by frequency):

  1. The most common cause of B0248 is a faulty refrigerant pressure sensor, which accounts for approximately 60% of cases. This sensor can fail due to wear and tear or exposure to extreme temperatures.
  2. Another potential cause is low refrigerant levels, often due to leaks in the A/C system. Regular maintenance checks can help prevent this issue.
  3. A malfunctioning A/C compressor can also trigger the B0248 code. If the compressor isn't operating correctly, it can lead to pressure irregularities.
  4. Less commonly, damaged wiring or poor electrical connections in the A/C system can cause this code to appear, which may require a visual inspection to identify.
  5. In rare instances, a faulty engine control module (ECM) can misinterpret sensor readings, leading to erroneous B0248 codes.

B0248 Repair Costs

Cost Breakdown by Repair Type

Refrigerant Pressure Sensor Replacement

Replacing a faulty refrigerant pressure sensor to restore A/C functionality.

  • Total: $150 - $300
  • Success rate: 85%
A/C System Leak Repair

Identifying and repairing leaks in the A/C system to restore proper refrigerant levels.

  • Total: $200 - $600
  • Success rate: 75%
Money-Saving Tips for B0248
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0248 Diagnosis Process

Follow these systematic steps to accurately diagnose B0248. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for damaged wiring, loose connections, or signs of leaks in the A/C system (5-10 minutes)

Step 1: Initial visual inspection - Check for damaged wiring, loose connections, or signs of leaks in the A/C system (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Utilize the app to retrieve all trouble codes and freeze frame data for a complete understanding of the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Utilize the app to retrieve all trouble codes and freeze frame data for a complete understanding of the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the refrigerant pressure sensor and other related components (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the refrigerant pressure sensor and other related components (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After repairs, verify proper A/C operation and clear DTCs using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After repairs, verify proper A/C operation and clear DTCs using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to ensure that the A/C system is functioning correctly and the code does not return (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to ensure that the A/C system is functioning correctly and the code does not return (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: A/C Repair on 2016 Ford F-150

Vehicle: 2016 Ford F-150, 75,000 miles

Problem: Customer reported the A/C was blowing warm air instead of cold.

Diagnosis: After using the GeekOBD APP, the B0248 code was retrieved. A visual inspection revealed a damaged refrigerant pressure sensor.

Solution: Replaced the refrigerant pressure sensor and recharged the A/C system with refrigerant.

Cost: $220 (sensor $100, labor $120)

Result: A/C system restored to full functionality, customer satisfied with the quick turnaround.

Case Study 2: A/C System Leak Repair on 2017 Chevrolet Silverado

Vehicle: 2017 Chevrolet Silverado, 50,000 miles

Problem: Customer noticed A/C was cycling on and off frequently, with warm air blowing.

Diagnosis: B0248 was flagged during an OBD2 scan. Further testing revealed low refrigerant levels due to a leak.

Solution: Identified and repaired the leak, replaced the A/C compressor, and recharged the system.

Cost: $550 (labor $300, parts $250)

Result: System functioning properly after repairs, with no return of the B0248 code.

Diagnose B0248

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0248
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes