OBD-II Error Code P2748: How to Fix Intermediate Shaft Speed Sensor B Intermittent Signal
Medium 1-2 hours Medium Severity
Verified June 2026
- Error Code
- P2748
- Brand
- OBD-II Generic
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-2 hours
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Tools You'll Need
- OBD-II scanner
- Digital multimeter
- Socket set
- Torque wrench
- Jack and jack stands (if needed)
- Safety gloves
How to Fix Error Code P2748
-
Check for Stored Codes and Freeze Frame Data
-
Inspect Wiring and Connectors for Damage
Disconnect the battery negative terminal before working on electrical components. -
Test the Sensor Resistance
-
Inspect the Reluctor Ring (Tone Wheel)
Ensure the transmission is in Park and the vehicle is securely supported on jack stands if working underneath. -
Replace the Intermediate Shaft Speed Sensor B
Use a torque wrench to avoid overtightening the sensor bolt. -
Clear Codes and Test Drive
Test drive in a safe area and obey all traffic laws.
Parts You May Need
Intermediate shaft speed sensor B
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Sensor O-ring
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Intermediate shaft speed sensor B
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Sensor O-ring
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Intermediate shaft speed sensor B
Check Price on Amazon
Sensor O-ring
Check Price on Amazon
Intermediate shaft speed sensor B
Check Price on Amazon
Sensor O-ring
Check Price on Amazon
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When to Call a Professional
If you have cleared the code and replaced the sensor but the code returns, or if you are uncomfortable working with transmission components, consult a professional mechanic. Intermittent electrical issues can be complex and may require specialized diagnostic equipment.Frequently Asked Questions
Can I drive my car with error code P2748?
You may be able to drive short distances, but it's not recommended. An intermittent signal can lead to erratic shifting and potential transmission damage. Have the issue diagnosed and repaired promptly.
How much does it cost to fix P2748?
The cost varies depending on the cause. DIY replacement of the sensor costs $30-$100 for the part. Professional repair may range from $150 to $400 including labor and diagnostics.
What are the symptoms of P2748?
Common symptoms include check engine light illumination, harsh or delayed shifts, slipping transmission, reduced fuel economy, and in some cases, the transmission may enter limp mode.
Is P2748 a serious error code?
Yes, it is considered medium severity. While the vehicle may still operate, ignoring it can lead to more serious transmission problems and expensive repairs.
What causes an intermittent signal from the intermediate shaft speed sensor?
Causes include a faulty sensor, damaged wiring or connectors, a damaged reluctor ring, loose mounting, or electrical interference. Often, the sensor or wiring is the culprit.