The ECU 000100.03 (100.03) error code on John Deere equipment indicates that the input voltage at the engine oil pressure sensor is exceeding the specified high sensor voltage threshold, typically indicating a short to 12 volts. This condition might be caused by issues such as damaged wiring, faulty connections, or a malfunction within the sensor…

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The ECU 000100.02 (100.02) error code indicates an anomaly where the engine oil pressure is not registering as zero even when the John Deere engine is off. This condition suggests a potential issue with the oil pressure sensor or the electrical circuit connected to it, which could be incorrectly signaling residual or phantom pressure due…

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The ECU 000100.01 (100.01) error code is triggered when the engine oil pressure registered is extremely low on John Deere engines equipped with an oil pressure sensor or when the oil pressure switch opens after the engine speed exceeds cranking speed for several seconds. This critical condition may indicate an actual low oil pressure situation…

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The ECU 000098.12 (98.12) error code reports a fault with the engine oil level sensor on John Deere machinery, indicating that the sensor is not functioning correctly. This could be due to sensor failure, wiring issues, or a problem with the sensor’s calibration.

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The ECU 000098.09 (98.09) error code signifies a data transfer problem between the ECU (Engine Control Unit) and the engine oil level sensor on John Deere equipment. This issue may stem from communication errors, such as corrupted data packets, interference, or a malfunction in the CAN (Controller Area Network) bus system that handles on-board diagnostics…

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The ECU 000097.16 (97.16) error code on John Deere equipment indicates that the water-in-fuel sensor has detected a moderately high amount of water in the fuel. This condition can significantly impact engine performance and may cause damage if not addressed promptly. Water in the fuel system can lead to issues such as reduced lubrication, increased…

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The ECU 000097.04 (97.04) error code on John Deere equipment indicates that the voltage from the water-in-fuel sensor is below the lower limit specified for low sensor voltage. This condition typically suggests a short to ground within the sensor’s circuitry. Causes can include damaged insulation, corroded connectors, or a grounding issue in the wiring. A…

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The ECU 000097.03 (97.03) error code on John Deere equipment signals that the voltage from the water-in-fuel sensor is exceeding the upper limit specified for high sensor voltage. This usually indicates a short to 12 volts within the sensor’s circuitry. Such an issue can arise from faulty wiring, incorrect connections, or damage to the sensor…

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The ECU 000094.18 (94.18) error code indicates that the low-pressure fuel sensor’s voltage on John Deere equipment is moderately below the expected range. This condition may suggest minor but notable issues in the sensor or its circuitry, often related to a malfunctioning fuel pump. This diagnostic code is also part of the issues covered under…

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The ECU 000094.17 (94.17) error code on John Deere equipment indicates that the voltage of the low-pressure fuel sensor is slightly below the expected range. This slight under-voltage could be symptomatic of minor issues in the fuel sensor or associated circuitry, potentially linked to a poorly functioning fuel pump. Similar to the ECU 000094.16 error,…

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The ECU 000094.16 (94.16) error code in John Deere equipment denotes that the low-pressure fuel sensor’s voltage is moderately higher than expected, suggesting a potential issue with the sensor or its circuit. This moderate over-voltage might not be severe enough to trigger a direct fault like a short but indicates that the voltage levels are…

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