What is the OBD 2 fault code for ABS?
OBD II fault code is defined as “ Data bus: anti-lock brake system (ABS) control module – no communication”, and is set when communication between the ABS brake system control module and the PCM (Powertrain Control Module) is lost for a specified time.
What does the OBD II fault code u0121 mean?
What Does Code U0121 Mean? OBD II fault code is defined as “ Data bus: anti-lock brake system (ABS) control module – no communication”, and is set when communication between the ABS brake system control module and the PCM (Powertrain Control Module) is lost for a specified time.
What causes an ABS controller to set code u0121?
Defective ABS control module. In some cases, replacement of other, unrelated control modules such as transmission control modules can lead to a loss of communication, and hence the setting of code U0121. Voltage spikes due to incorrect jump starting procedures or other causes can damage one or more controllers, including the ABS control module.
What causes an ABS control module to fail?
The possible causes of the failure of the ABS control module (or any other controller for that matter) are many and varied, including some causes not related to the ABS circuit at all. Below are some possible causes of code U0121- Damaged, burnt, shorted, corroded, or otherwise damaged wiring and connectors. . Defective ABS control module.
Can you check your abs with an OBD2 scanner?
Can AutoZone check ABS codes? By using OBD2 scan tools, AutoZone can check your ABS codes for you. You may also check the trouble codes yourself if you own or have access to an OBD2 scanner with ABS and SRS compatibility.
What does it mean when your ABS module says u0121?
Code U0121 indicates the ABS module is not receiving or transmitting messages on the CAN bus. Code U0121 is typically caused by one of the following: Sometimes U0121 can pop up intermittently, or it can result from a dead battery.
Where are OBD2 codes stored in a car?
Diagnostic trouble codes (or fault codes) are obd2 codes that are stored by the on-board computer diagnostic system. These are stored in response to a problem found in the car by the system. These OBD2 codes are stored when a sensor in the car reports a reading that is outside the normal/accepted range (Eg: fuel mixture too rich).
What causes an OBD code of u0121?
Code U0121 is typically caused by one of the following: 1 A dead battery 2 A faulty ABS module 3 A problem with ABS module circuit 4 A problem with the CAN bus