What Does P215A Mean?
The PCM has detected a mismatch between the calculated vehicle speed and the wheel speed sensor inputs. This indicates the sensors are providing conflicting data about actual vehicle speed.
Common Causes
30%
Mismatched tire sizes or significantly uneven tire wear/pressure
25%
Faulty wheel speed sensor(s) providing incorrect data
20%
Damaged tone ring or excessive wheel bearing play
15%
Recent tire change or wheel replacement without proper calibration
10%
Failed vehicle speed sensor or transmission output speed sensor
Diagnostic Steps
1
Step 1: Verify all four tires are proper size, matching, and inflated to correct pressure
2
Step 2: Compare all four wheel speed sensor readings simultaneously during test drive using scan tool
3
Step 3: Check for wheel bearing play or damage that could affect wheel speed sensor accuracy
4
Step 4: Inspect all wheel speed sensor tone rings for damage or debris accumulation
5
Step 5: Compare vehicle speed sensor output to average of all four wheel speeds for correlation
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
The PCM has detected a mismatch between the calculated vehicle speed and the wheel speed sensor inputs. This indicates the sensors are providing conflicting data about actual vehicle speed.
The most common cause of P215A (Vehicle Speed - Wheel Speed Correlation) is: Mismatched tire sizes or significantly uneven tire wear/pressure
Typical repair costs for P215A range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
ABS and traction control may be disabled or function improperly. This significantly impacts emergency braking and stability control capabilities.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P215A to identify the root cause.
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Quick Info
Category
Powertrain
System
ABS/Traction Control
Difficulty
Type
Generic (SAE)
Recommended Tools
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