Rodent chewed up bunch of wires now ABS lights on

ALEXSCRUFF

MEMBER
2006 MAZDA 6
2.3L
4 CYL
2WD
AUTOMATIC
142,000 MILES

A rodent made a nest and chewed up wires to my transmission speed sensor and knock sensor which gave me a bunch of error codes/lights on my dash.
Mechanic fixed knock sensor and transmission speed sensor, But ABS, Traction and slippery light are all still on.
Having a hard time finding an ABS code reader.
Any ideas what's going on?
Thanks

7 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

What is the code that was set? That will help narrow the area of failure for me to help you.

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

Where are the wires that are chewed up for the ABS? Can you post a picture for me of the harness?

Roy

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Sunday, May 24th, 2020 AT 3:51 AM

ALEXSCRUFF

MEMBER
5 POSTS

Hi Roy,

Thanks for responding back to me. Code for knock sensor was P0328 and code for transmission speed sensor was P0715.
Mechanic says both wiring to knock sensor and transmission speed sensor were all chewed up (sorry don't have a pic).
All I know is exactly at the same time ABS and Traction warning lights also came on, and are still on. He is thinking it's a wheel speed sensor?

Thanks and have a fun and safe holiday.

Alex

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Sunday, May 24th, 2020 AT 5:43 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Thanks.

There is a fault code stored in the ABS and must be read before guessing about anything.

The 328 is for the knock sensor. The easy way of checking it is to have a scan tool hooked up with the engine idling. Monitor the timing on the scan tool. Take a small hammer and tap the top of the motor, if the sensor is working, you will see the timing change 4 degrees to the retarded side.

The 715 is for the input speed sensor. Did he verify the sensor was sending a signal the the ECM?

I hope he did not use butt connectors for the wiring repair. They are not solid connections.

I attached flow charts for you as well.

Roy

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Monday, May 25th, 2020 AT 5:55 AM

ALEXSCRUFF

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HI again Roy,

This is my first time using this mechanic through a friend. I usually take my car to Mr Tire and have been doing so for years and been quite happy. But when all this stuff happened recently, Mr Tire told me I needed to take my car to a transmission shop as they couldn't help me. A buddy said take it to his guy to see what he thought, he is the one who found the rodents nest and the chewed up wires. All I know is what he told me and the car does drive again. So I asked him if he could also fix the knock sensor code too. Now yes all my 5 gears in my transmission are back working. No bucking anymore, but after I got it back I did notice that when I take my foot of the gas pedal and the speed starts to decrease that now the RPM needle goes back and forth and at the same time the car feels like it's gasping for air until I put my foot back on the gas. I'm wondering now if something was not fully connected. Like a hose or a gasket? I'm taking it back to him to see what he thinks. I appreciate your advise

Thanks,
Alex

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Tuesday, May 26th, 2020 AT 10:59 AM

ASEMASTER6371