ECU 000636.02 – Excessive Noise in Camshaft Speed Sensor Signal. John Deere System Advisory.

ECU 000636.02 (ECU 636.02)

Code: 000636.02

Shortcode: 636.02


Error code ECU 000636.02 is issued when the ECU detects excessive noise or extra pulses from the camshaft speed sensor, which can interfere with accurate engine timing and performance.


This condition may cause erratic engine behavior, timing issues, or potential misfires, as the ECU struggles to accurately determine engine position.


  • Inspect Sensor and Wiring: Check the camshaft speed sensor and associated wiring for damage or interference that could cause signal noise.
  • Replace Faulty Sensor: If the sensor is found to be defective, replace it to restore accurate sensing of camshaft position.
  • Shield and Secure Wiring: Ensure that sensor wiring is properly shielded and secured away from sources of electrical interference.
  • Test Engine Performance: After repairs, test the engine under various conditions to ensure accurate camshaft position detection and smooth operation.


Maintaining accurate engine sensor signals is crucial for proper engine management and to prevent performance degradation.

Control Units: John Deere

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