00577–00582 Knock Control Cylinder 1 - Control Limit Reached
The value has run past the end of the range the ECU can work with, so it has stopped trying to compensate and logged the fault instead.
Can you drive it? This class of fault can cause real mechanical damage if you keep driving on it. A persistent misfire also destroys the catalytic converter, which is the expensive part.
Which code is which
Same fault, different cylinder or bank — diagnosed the same way. Several set together usually means one shared cause.
| Code | Definition | Severity |
|---|---|---|
00577 | Knock Control Cylinder 1 - Control Limit Reached | Do not keep driving |
00578 | Knock Control Cylinder 2 - Control Limit Reached | Do not keep driving |
00579 | Knock Control Cylinder 3 - Control Limit Reached | Do not keep driving |
00580 | Knock Control Cylinder 4 - Control Limit Reached | Do not keep driving |
00581 | Knock Control Cylinder 5 - Control Limit Reached | Do not keep driving |
00582 | Knock Control Cylinder 6 - Control Limit Reached | Do not keep driving |
The definition
00577: Knock Control Cylinder 1 - Control Limit Reached.
What to check first
Cheapest and fastest checks first:
- Read the freeze-frame data stored with the fault - engine speed, load and temperature at the moment it logged tell you whether this happens cold, hot or under load.
- Check the connector at the part for corrosion, and that it is fully seated.
- Clear the code and see whether it returns, and under what conditions.
Reading the code is the easy part
A code names the circuit that complained. What tells you why is watching the sensor behind it while the engine runs — and that is where a code reader stops and a diagnostic tool starts.
VAGPULSE reads every module in a VW, Audi, Skoda or SEAT — not just the engine — shows the live measuring blocks behind this fault, gives you the freeze-frame conditions it was logged under, and clears it once you have fixed it. It also does what a generic OBD reader cannot on a VAG: service resets, coding, adaptations, and Stage 1–3 flashing with your original file saved first.
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Prefer to work on your phone? The VAGPULSE Android app is a free download and its demo mode runs against a sample car with no hardware at all, so you can see exactly what it reads before spending anything. Reading your car with it needs the VAGPULSE cable, which comes with the licence.
Common questions
What does 00577 mean?
00577 means Knock Control Cylinder 1 - Control Limit Reached. The value has run past the end of the range the ECU can work with, so it has stopped trying to compensate and logged the fault instead.
Can I drive with 00577?
This class of fault can cause real mechanical damage if you keep driving on it. A persistent misfire also destroys the catalytic converter, which is the expensive part.