Frequently asked questions related to the OBD Freeze Frame Can there be multiple freeze frames? In any case, you should notice that the Freeze Frame is not stored indefinitely. For instance, an engine misfire will most likely override the previous content. In some cases, a new Freeze Frame snapshot will override the previously stored data, and you will lose the older data. It’s rather essential to read the Freeze Frame data as soon as it’s stored because most cars can provide only a single Freeze Frame. OBDII Freeze Frame with the macOS software Whether you are using the computer software or the mobile app, navigate to Trouble Codes -> Freeze Frame. The software fetches the data from the car and gives it to you in a human-readable format. Reading the Freeze Frame data with OBD Auto Doctor is straightforward. How to read the Freeze Frame?Īs the Freeze Frame is an integral part of the OBD2, basically all OBD2 scanners can access and present the snapshot data to you. It’s an essential part of onboard diagnostics. The causing DTC might be P0301 Cylinder 1 Misfire Detected, for example.Īll OBD2 compliant cars are required to support Freeze Frame. The engine control unit stores this snapshot data along with the DTC, and it’s called a freeze frame. Experience with engines and cars will help when analyzing the possible solutions to fix the malfunctions.įor example, when an engine misfire is detected, a snapshot of the current sensor values is captured. However, sometimes coming to conclusions might need some guesswork. The sensor data values stored in the frame help you figure out what might be wrong with your vehicle. The DTC that’s part of the Freeze Frame will reveal to you the DTC that is the main cause for the problems and occurred first. In this case, you cannot tell what DTC was the first one and caused the Malfunction Indicator Light (MIL) to light.
Quite often, the car might have multiple DTCs simultaneously when some fault or faults occur. In addition, the freeze frame contains the Diagnostic Trouble Code (DTC) that the computer system identified as the reason for the malfunction. It’s a snapshot of sensor or component readings (parameter values) captured at the moment when the electronic control unit detected a malfunction. In simple terms, a freeze frame is a snapshot of data. This tutorial will explain in detail what the Freeze Frame is. Freeze Frame provides insight into the conditions that were present when a malfunction occurred. OBD2 Freeze Frame is a simple but powerful tool when trying to diagnose car malfunctions.
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