cloud51ve
Junior Member
Hey y'all. First time poster! I fixed a C1A99:17-8B-Brake Pressure Sensor code that I did not see a solution for on the forum. There are two posts about the code but they have expensive and tedious replacements and you also need a scan tool to pair the ABS module to your vehicle (They're VIN locked.)
The code comes from the pressure sensor in the ABS Pump/Module and you only need to replace the sensor. You will take only the sensor out of the used ABS Pump and replace your broken one with it. (It is possible that the used pump might have the same issue but it worked for me)
You can do this without a code reader but it is much easier to verify the repair with one. You will need one that reads ABS Codes. I recommend the KINGBOLEN EDIAG ELITE $75.99 and it can see so much.
The tools you will need are:
T-20 Torx hex bit long
1/4" drive 1/4" socket for the T-20 Torx
1/4" Ratcheting wrench
10mm socket
8mm socket
17mm socket
Flat head screwdriver to remove the snorkel correctly (I yanked and broke a tab but it'll be fine.)
Optional code reader (Needs to be able to read ABS Codes)
1. Buy an ABS Pump
First you'll need to source a brake pump/module from a vehicle of the same year. (I assume that it will work for all S197 but I can't verify that.) I found mine from an auto recycler for $50.
2. Remove AF housing, intake pipe, and snorkel.
Then you will have to remove the air filter, air filter housing (1) 10mm, intake before the throttle body (2) 8mm hose clamps (just loosen them) and the snorkel that is next to the radiator. (You will not have to remove the MAF connector or the hoses on the intake pipe unless you want to.)
3. Remove original module from ABS Pump (In Vehicle)
Disconnect ABS Connector from ABS Module. There is a locking tab that you need to push down with a fingernail or screwdriver. You will be able to access the (4) T-20 Torx that are on the back of the ABS Pump. You will remove those Torx and remove the plastic housing for the ABS Pump. Set it aside and mark it so you don't get mixed up with the one from the other vehicle.
4. Remove module from USED ABS Pump
Remove the (4)Torx from the used ABS Pump and remove the plastic cover and put it away from the car.
5. Remove ABS Pressure sensor from USED ABS Pump
Then use the 17mm to remove the ABS Pressure sensor. It's the only sensor that is threaded on. It's pretty tight but you can get it off.
6. Remove ABS Pressure sensor from ABS Pump (In Vehicle)
Bring the replacement sensor with you when you loosen the broken sensor because you will want to swap it as quick as you can so that you only lose a few drops of brake fluid. Use the 17mm to remove the ABS Pressure sensor. Once it's loose, twist it off by hand so that once it's out, you can immediately put the other one in.
7. Install USED ABS Sensor from USED ABS Pump
Use your hand to install the USED ABS Pressure Sensor and twist until it is seated on the metal face. Once seated use the 17mm to tighten.
8. Install original ABS Module on ABS Pump (in vehicle)
Place the module in the same orientation as it came off and it should line up and seat all the way on the face of the ABS Valve body. Install the (4) T-20 Torx and tighten. Reinstall the ABS Connector. There is also a locking tab that you have to push with a fingernail or screwdriver to unlock. It will pull itself into place and click when it is installed correctly.
9. Reinstall snorkel, intake pipe (2) 8mm hose clamps and Air filter housing (1) 10mm
10. Check to see if ABS light has gone away by starting the vehicle.
11. Success.
12. Make sure to bleed your brakes. (You'll need a code reader that can open the solenoids like the one I listed above)
I also made a YouTube video to show the process
The code comes from the pressure sensor in the ABS Pump/Module and you only need to replace the sensor. You will take only the sensor out of the used ABS Pump and replace your broken one with it. (It is possible that the used pump might have the same issue but it worked for me)
You can do this without a code reader but it is much easier to verify the repair with one. You will need one that reads ABS Codes. I recommend the KINGBOLEN EDIAG ELITE $75.99 and it can see so much.
The tools you will need are:
T-20 Torx hex bit long
1/4" drive 1/4" socket for the T-20 Torx
1/4" Ratcheting wrench
10mm socket
8mm socket
17mm socket
Flat head screwdriver to remove the snorkel correctly (I yanked and broke a tab but it'll be fine.)
Optional code reader (Needs to be able to read ABS Codes)
1. Buy an ABS Pump
First you'll need to source a brake pump/module from a vehicle of the same year. (I assume that it will work for all S197 but I can't verify that.) I found mine from an auto recycler for $50.
2. Remove AF housing, intake pipe, and snorkel.
Then you will have to remove the air filter, air filter housing (1) 10mm, intake before the throttle body (2) 8mm hose clamps (just loosen them) and the snorkel that is next to the radiator. (You will not have to remove the MAF connector or the hoses on the intake pipe unless you want to.)
3. Remove original module from ABS Pump (In Vehicle)
Disconnect ABS Connector from ABS Module. There is a locking tab that you need to push down with a fingernail or screwdriver. You will be able to access the (4) T-20 Torx that are on the back of the ABS Pump. You will remove those Torx and remove the plastic housing for the ABS Pump. Set it aside and mark it so you don't get mixed up with the one from the other vehicle.
4. Remove module from USED ABS Pump
Remove the (4)Torx from the used ABS Pump and remove the plastic cover and put it away from the car.
5. Remove ABS Pressure sensor from USED ABS Pump
Then use the 17mm to remove the ABS Pressure sensor. It's the only sensor that is threaded on. It's pretty tight but you can get it off.
6. Remove ABS Pressure sensor from ABS Pump (In Vehicle)
Bring the replacement sensor with you when you loosen the broken sensor because you will want to swap it as quick as you can so that you only lose a few drops of brake fluid. Use the 17mm to remove the ABS Pressure sensor. Once it's loose, twist it off by hand so that once it's out, you can immediately put the other one in.
7. Install USED ABS Sensor from USED ABS Pump
Use your hand to install the USED ABS Pressure Sensor and twist until it is seated on the metal face. Once seated use the 17mm to tighten.
8. Install original ABS Module on ABS Pump (in vehicle)
Place the module in the same orientation as it came off and it should line up and seat all the way on the face of the ABS Valve body. Install the (4) T-20 Torx and tighten. Reinstall the ABS Connector. There is also a locking tab that you have to push with a fingernail or screwdriver to unlock. It will pull itself into place and click when it is installed correctly.
9. Reinstall snorkel, intake pipe (2) 8mm hose clamps and Air filter housing (1) 10mm
10. Check to see if ABS light has gone away by starting the vehicle.
11. Success.
12. Make sure to bleed your brakes. (You'll need a code reader that can open the solenoids like the one I listed above)
I also made a YouTube video to show the process
