#freeze frame
6 posts in Car Diagnostics blog about "freeze frame" — OBD-II diagnostics, DTC codes, repair. ← All posts
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Intermittent faults: catching a problem that will not stay broken
The fault happens on the way to work and never at the workshop. Logging turns that into a solvable problem, because the recording is the diagnosis.
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Freeze frame or live data: which one answers your question
One is a photograph of the moment a fault occurred, the other is a film of what is happening now. Choosing the wrong one is why people stare at healthy numbers for an hour.
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Clearing codes: when it helps and when it hurts
The clear button looks like a solution while often destroying the evidence. When clearing is appropriate and what disappears with the code.
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When the scanner lies: ghost codes, false triggers, and why "a code" is not "a broken part"
The code points at a sensor and the sensor is fine. The code vanishes and returns a week later. Why that happens, how to tell a real fault from a side effect, and why the freeze frame decides more than the code does.
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Checking a used car with OBD: a 20-minute protocol to run before you hand over the money
The seller clears the fault memory five minutes before you arrive, and your scanner reports a clean bill of health. Here is the seven-step order that catches it: readiness monitors, pending codes, freeze frame, a cold start, and the module roll call.
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Freeze Frame: how OBD "photographs" the moment of a fault and why it matters more than the DTC itself
What OBD-II Freeze Frame data is, which parameters it captures, how to read the ECU snapshot, and why an experienced diagnostician looks at it before the trouble code itself.