SureTrack Community Fix: Believe the Code

Real Fixes from the SureTrack® expert information resource are documented issues from actual shop repair orders and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free with the purchase of a current Snap-on® diagnostic software version.

When a code tells you over and over again that you have the wrong component installed, you might want to believe it. SureTrack community member Peirs13 had a Ford Escape in their shop that came in with the ABS light on, they replaced the wheel sensor but then got a new code saying it had an incorrect component. They posed the question to the community, and with the help of fellow community member Juniur and others, they were able to resolve the issue quickly.

The following Community Fix summarizes the interaction between members of the community that led to the solution.

Vehicle
2013 Ford Escape SE 1.6L

Title
Code C0037-4a, replaced rear wheel sensor.

Complaint
Customer states that ABS light is illuminated.

Diagnostic Steps Performed/Parts Replaced
Vehicle came in with both rear speed sensor circuit codes. Replaced both rear wheel sensors and right rear operates properly. Left rear now throws code C0037-4a “Incorrect component installed”. Installed a second left rear wheel sensor and same code comes back. Replaced the hub assembly, which came with another sensor, and same thing, throws code immediately on KOEO test. Tested the circuit and it checks out, checked and tightened pins, no corrosion. I’ve run into this before with aftermarket parts but this is all OEM Motorcraft parts.

Best Answer from Community Member Juniur
There are 2 different sensors available for these vehicles. The difference is whether or not it is equipped with “park assist”. Park assist wheel speed sensors are bi-directional. Non-park assist speed sensors are not bi-directional.

Cause
Was installing incorrect left rear wheel sensor.

Correction
Replaced left rear wheel sensor with correct version. Cleared code and tested vehicle and code did not return.


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About the Author

Nick Taylor

Nick Taylor is the SureTrack Community Administrator and a Senior Applications Specialist at Mitchell 1 with over 25 years of experience with electronic repair data systems. Nick previously worked in the automotive dismantling and engine rebuilding industries.