What Does P2162 Mean?
The PCM has detected that the speed signals from Vehicle Speed Sensor A and B do not agree with each other beyond acceptable tolerances. This correlation error indicates one or both sensors are providing inaccurate data.
Common Causes
40%
One VSS sensor failing or reading incorrectly while the other is accurate
25%
Different tire sizes or mismatched tire diameters causing actual speed difference between sensor locations
20%
Damaged reluctor ring or tone wheel on one sensor location
10%
Wiring issue affecting one sensor circuit causing signal distortion
5%
Drivetrain issue causing actual speed mismatch (slipping clutch, differential problem)
Diagnostic Steps
1
Step 1: Using scan tool, monitor both VSS A and VSS B live data simultaneously during test drive to identify which sensor reading is incorrect or if both readings are present but different
2
Step 2: Verify all four tires are same size, type, and properly inflated to rule out legitimate speed differences between axles
3
Step 3: Test each speed sensor individually by following diagnostic procedures for P2160/P2161 to isolate the faulty sensor
4
Step 4: Inspect both reluctor rings/tone wheels for damage, missing teeth, or contamination that would cause different pulse counts
5
Step 5: For AWD/4WD vehicles, verify transfer case and differential are operating correctly and not causing actual speed variations between front and rear axles
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The PCM has detected that the speed signals from Vehicle Speed Sensor A and B do not agree with each other beyond acceptable tolerances. This correlation error indicates one or both sensors are providing inaccurate data.
The most common cause of P2162 (Vehicle Speed Sensor "A"/"B" Correlation) is: One VSS sensor failing or reading incorrectly while the other is accurate
Typical repair costs for P2162 range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause ABS and traction control systems to function improperly or disable completely. Transmission may experience harsh or delayed shifts, and all-wheel drive systems may not engage properly, affecting vehicle control.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2162 to identify the root cause.
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Quick Info
Category
Powertrain
System
Vehicle Speed Sensor System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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