Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1995CAVALIER LS, 2D CONVERTIBLE, 2.2 4, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - TESTS W/CODES - 2.2LECM/PCM CODE CHARTSCODE 43, KNOCK SENSOR ERRORNOTES
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, Standard
Code 43, Knock Sensor Error: Notes
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, StandardSECTION Notes
NOTE:
Test numbers refer to numbers on diagnostic chart.
- If conditions for code exist, SERVICE ENGINE SOON light will be on.
- If engine has an internal problem, sensor may be responding to mechanical noise.
- Checks knock sensor activity. Scan displays knock sensor activity in counts (about 35-50 at idle). Counts should rise as engine speed increases.
- Checks internal resistance of knock sensor.
- Checks knock sensor connections. A faulty connection or component will set a Code 43
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.