ABS/Parking warning lights back on after supposed fix

For several years the ABS/Parking warning light was on. Using the ‘short out the diagnostic wire’ I got error code 9, so I replaced the speed sensor and that solved that problem. Today has been a rainy day and the ABS/Parking warning light came on again. This time, though, it will not flash the error code. I found the diagnostic wire (black and white stripe) by going to the module and then immediately grounded it to a good ground just off the RWAL harness. But nothing happened; it did not help. I also tried to go straight from the wire and all fuses are in good condition, plus the light ca
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To read the flash codes, make sure you have a clean and stable chassis ground or the codes will not flash. If there is a secure ground and no flash codes, then it is quite possible that this is an issue with the rear ABS module. You may want to enlist the help of a mechanic, such as one from YourMechanic, who can attempt to retrieve codes and therefore diagnose and repair the system. Please note that with a faulty ABS module, you will not have rear anti-lock brakes so the braking characteristics will be different.

How to Identify and Fix Common car Problems ?

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The abs and parking brake lights coming on typically indicate a fault in the anti-lock braking and/or the traction and stability control systems system.
Four Reasons Your Anti-lock Brake System Light Can Come On

The four common reasons that typically cause this light to turn on include a malfunctioning ABS module, low levels in the fluid reservoir, broken wheel speed sensors, or the system is turned off.

Some common reasons your ABS light would come on are a blown fuse for the system, broken or dirty wheel speed sensors, low brake fluid, or the ABS control module not working.
Because the ABS and traction control often share the same module, a problem with one mechanism might be indicated by a light for both. If the brake system is malfunctioning, the traction control light might come on as a result. The light for your ABS might also come on if the brake fluid is low.
Resetting Your ABS Dashboard Warning Light

Step One: Disconnect the positive cable from your car battery. Then, hold down the brake pedal to drain the vehicle`s electrical system. This will result in a reset of the car`s central computer. Plug the cable back in to restore power.

In order to operate, your ABS system needs electricity. This is controlled by the anti-lock fuses and relay. The first fuse (a 10 amp fuse) must be good in order for electricity to flow to the relay, and the relay must function to provide power to the second fuse (a 30 amp fuse).
Since car is stationary, ABS won`t make any difference. ABS won`t even make a difference if you`re driving at low speed. so abs is not useful for parking brake if you want to replace it for any concept you can try it .
One reason your vehicle`s ABS light is on is because it may be sensing abnormally low levels of brake fluid. You`ll be able to notice if your brake fluid is low by the way your car brakes. The braking may seem soft or spongy. However, if the brake fluid is low, you`ll probably see more than just the ABS light come one.
If your ABS light comes on individually, you are safe to drive your car to your destination, as your normal brakes will still work. You will, of course, have to be more careful as your ABS will not respond in case of an emergency.
If your ABS light comes on individually, you are safe to drive your car to your destination, as your normal brakes will still work. You will, of course, have to be more careful as your ABS will not respond in case of an emergency.
Yes, in a somewhat indirect way. As we`ve mentioned, your car`s ABS light can be triggered by low brake fluid. Worn brake pads deplete your brake fluid. By doing this, they can trigger your car`s ABS light.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

No dash lights, back right tail light is out, no parking lights. Brake lights work though as does head lights.
ANSWER : Hi there. In many cases, when you have electrical problems like you’re describing, it’s caused by multiple electrical component failure. It’s likely that a few electrical relays are not working; especially if you have systems that utilize the same components (such as your brake light and tail lights). I would recommend having a professional mobile mechanic come to your location to complete an electrical problems inspection first, so they can pinpoint what is damaged and recommend the right repairs.

Abs light, emergency brake light, steering wheel assist light, engine light, EPC light, traction control light
ANSWER : Hello, thank you for writing in. The vehicle does utilize a lot of the same sensors for these systems. Are there any other codes that are coming up when this code appears? If so you will want to take these into consideration when processing the repair and making a diagnosis. The module may be bad, and replacing it should fix the problem. The lights should turn off once the main computer recognizes the new module and the sensors sync up. If you believe the sensors need to be cleaned you may do so. Do as minimal as possible to make sure you are not damaging the sensor or disrupting the wiring inside. A bad connection would make the lights stay on. With so many lights that are effected by the module being illuminated, the module is likely bad or does not have a connection. Check the connection first and then resort to replacing the unit. For more help with these electrical tests, contact our service department.

Battery light goes on when I start car then turns off, if I rev engine light comes back until rpms go down. Abs goes comes on/off
ANSWER : Batteries can die due to faults in the charging system so ideally a suspected "faulty" battery should be load tested before a decision is made to condemn it. The only exception to this rule is if the battery is already clearly "old" (greater than 5 years) but even then once you put a new battery in, as a replacement for a "dead" battery, you have to comprehensively check out the charging system. Diagnostic Trouble Code P0460 will result in disruption of the dashboard fuel gauge’s ability to accurately report your tank’s fuel levels. The fuel gauge readings may be erratic, or read somewhere off scale. Vehicles equipped with a low fuel warning light feature may also suffer from erratic low fuel warnings in the event of a code P0460. Unless the P0460 code has been reported alongside other trouble code, all of the vehicle’s essential systems should otherwise function normally. I would recommend that you request a check engine light diagnostic to first resolve the fault causing the P0460 code to set. The check gas cap light warning light could be due a faulty gas cap and/or small leaks in the EVAP system.

signals, daytime running lights are not working, park brake light on dash is on steady and chime is dinging steady 4×4 wont engage
ANSWER : This is likely a brake light switch problem. I would suggest testing the brake light switch which should be located down by the brake pedal. This may also be a computer problem as well as indicated by the other lights on in the dash. I would recommend having an expert from YourMechanic come to your home to possibly replace the brake light switch and diagnose with a scanning tool which will download useful data from the truck’s computer indicating what specifically the problem may be.

While driving on freeway truck goes into a limp mode, and the check engine light, abs light, parking break light, service brake
ANSWER : It is possible that you could be having an issue with your powertrain control module. This is somewhat of a common problem on many GM vehicles. I would recommend having your vehicle inspected by the dealership to determine if the powertrain control module is functioning properly. If not, a reflash of the powertrain control module may resolve the issue but often times it must be replaced.

Aftermarket headlamps, right parking light, and left parking light dashboard messages are on.
ANSWER : The message is on for the lights are not completing a circuit from the switch to the lights. Check all of the wiring on the lights and see if all of them are plugged in properly. Then look for any wiring that is disconnected that is in the streams of the light circuits. For the harness that you found, turn on the lights and use a test light and see if there is power on the harness. Then turn off the lights and see if the power goes away. If the power is operated by the light switch, then the harness is unplugged and that would be the reason the message is on. Otherwise, a loose connection or damaged wire will also cause the message to come on. If you need further assistance with the message on for the lights, then seek out a professional, such as one from Your Mechanic, to help you.

Interior dim lights out and won’t come back on
ANSWER : Hello, thank you for writing in. The fuses that you need to check are located inside the cabin near the dashboard. These are the fuses pertaining to lights you are concerned with. Keep in mind the vehicle should always be off when working on electrical components, and it is typically safer if you disconnect the battery as well. With the short that was created, and where it was created, there is very likely a fuse protecting the circuit, which is why all of these components went dark as a result. Considering the circumstances, all of the fuses should be checked. For more help resolving the issue, contact our service department to schedule an appointment.

ABS light on, ESP light on,Traction OFF light on, engine light on, rides perfectly OBDI reads only Front Right Wheel Speed Sensor
ANSWER : If a faulty component is still in place, the fault codes will return almost immediately after clearing them. ABS, ESP, and traction control systems all rely on input from wheel speed sensors to determine as the name implies, the speed of each wheel. When a wheel, or wheels are spinning faster than others due to wheel slip or the vehicle is sliding, the ABS and ESP systems can reduce throttle input as well as apply braking to an individual wheel or all of them if needed. With a wheel speed sensor fault code stored, these systems cannot determine the rate that all 4 wheels are spinning and sets a fault. That is why the abs/esp light is on. The system should be scanned by a certified technician and the wheel speed sensor replaced if found to be the cause. The warning lights will stay on and these systems will not function as designed until the fault is corrected. These lights do not come on to indicate a need for routine service. Rather they only come on when a component in the system is at fault.