What Does P215C Mean?
The PCM has identified a mismatch between the transmission output shaft speed sensor and the wheel speed sensors. These should correlate through the final drive ratio but are showing inconsistent data.
Common Causes
30%
Incorrect tire size or mismatched tires causing speed discrepancy
25%
Faulty wheel speed sensor(s) providing erroneous data
20%
Failed transmission output shaft speed sensor
15%
Damaged wheel bearing causing wheel speed sensor inaccuracy
10%
Differential or transfer case slippage (AWD/4WD vehicles)
Diagnostic Steps
1
Step 1: Confirm all tires are correct size, matching, and properly inflated
2
Step 2: Compare output shaft speed to all four wheel speeds during steady driving using scan tool
3
Step 3: Calculate expected wheel speed based on output shaft speed, final drive ratio, and tire size
4
Step 4: Check wheel bearings for excessive play or noise that could affect sensor accuracy
5
Step 5: For AWD/4WD vehicles, verify front and rear driveline speeds match expected ratios
Estimated Repair Cost
$120 - $800
Parts + labor, varies by vehicle and location
The PCM has identified a mismatch between the transmission output shaft speed sensor and the wheel speed sensors. These should correlate through the final drive ratio but are showing inconsistent data.
The most common cause of P215C (Output Shaft Speed - Wheel Speed Correlation) is: Incorrect tire size or mismatched tires causing speed discrepancy
Typical repair costs for P215C range from $120 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May disable ABS, traction control, and stability systems. On AWD vehicles, may indicate drivetrain component failure requiring immediate attention.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P215C to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission/Drivetrain
Difficulty
Type
Generic (SAE)
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