The ABS light is on and car is not revving. Have trouble codes C1233, C1234, C1236

2009 FORD FIESTA

120,000 MILES • 1.4L • 4 CYL • TURBO • 2WD • MANUAL

SANIF KA

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I have the car listed above with a 1.4 tdci. The ABS light is on and car is not revving. Have trouble codes C1233, C1234, C1236. So far changed ABS control Module but no luck. While car is running connected odb tool to perform live wheel speed sensor signal reading and found that from 3 wheel speed sensor the signal is showing 0 and the other one doing fine. Please help me with this issue.

Dec 20, 2019 at 11:44 AM

KASEKENNY

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If they are reading 0 then you either have a sensor, wiring, or module issue. I would suspect the sensors but it is odd that all of them would fail at the same time unless this has been happening for a while.

Here is how to test the sensors:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

I am attaching below how to replace the front and rear sensors from the manual. Please let us know if you have questions. Thanks

Images (Click to enlarge)

Apr 8, 2021 at 1:21 PM