P215A Fault Code

Vehicle Speed Wheel Speed Correlation

• What does that mean?
• Symptoms
• Causes
• Solutions

The P215A fault code indicates a discrepancy between the vehicle speed and the wheel speed signals. This suggests that the engine control module (ECM) is detecting a difference between the expected vehicle speed and the actual speed measured at the wheels, which can lead to improper transmission shifting and potential issues with traction control systems.

What are the symptoms of the P215A code?

Drivers might experience symptoms like:

• Inconsistent or erratic shifting of the transmission
• Traction control or stability control warning lights illuminated
• Speedometer reading inaccuracies
• Unusual vehicle behavior, especially during acceleration or braking

What causes the P215A code?

Several factors can trigger the P215A code, including:

• Malfunctioning wheel speed sensors
• Damaged wiring or connectors between the speed sensors and the ECM
• Faulty transmission control module (TCM)
• Incorrect tire sizes or mismatched wheels affecting speed readings
• Issues with the vehicle's ABS system

How to fix P215A?

To resolve a P215A code, consider the following steps:

• Inspect and test the wheel speed sensors for proper operation
• Check the wiring and connectors for damage or corrosion
• Ensure that the correct tire sizes are installed on the vehicle
• Clear the fault code and conduct a road test to see if it reappears
• If necessary, replace faulty components or perform further diagnostics to identify the root cause.