This diagnostic trouble code, PTQ 524173.04, indicates that the voltage at the signal input of channel 1 of the clutch pedal potentiometer is below 0.3 volts. This suggests a problem with the signal lead or the potentiometer supply voltage.

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This diagnostic trouble code, PTQ 524173.03, indicates that the voltage at the signal input of channel 1 of the clutch pedal potentiometer is above 4.7 volts. This suggests a problem with the signal lead or the ground connection of the potentiometer.

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This diagnostic trouble code, PTQ 523966.31, is generated when the come-home mode is activated (plug for come-home function in the COME-HOME position). The operator is informed to move the reverse drive lever to its neutral or park position to access the next stage of the come-home function.

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This diagnostic trouble code, PTQ 523961.07, indicates that the range lever is in the park position but the reverse drive lever is not in the neutral position.

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This diagnostic trouble code, PTQ 523953.02, indicates a conflict between the switch position of the reverse drive lever and the drive signal from the TIQ and FCC control software. The reverse drive lever must be moved to the park position to cancel this code.

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This diagnostic trouble code, PTQ 523677.31, indicates that no operator is present on the seat for more than 2 seconds while the declutch switch on the range-shift lever is activated. The control software then turns off the function of the clutch switch on the range-shift lever.

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This diagnostic trouble code, PTQ 523677.14, indicates that the declutch switch on the range-shift lever has been deactivated, with the input value reading 0 from address TIQ 167.

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This diagnostic trouble code, PTQ 522847.06, indicates that the circuit current for the proportional solenoid valve for transmission enable is too high, suggesting a short to ground. This error is detected within 200 msec in normal operating mode and 400 msec in come-home mode.

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This diagnostic trouble code, PTQ 522847.05, indicates that the circuit current for the proportional solenoid valve for transmission enable is too low, suggesting an open circuit. This error is detected within 200 msec in normal operating mode and 400 msec in come-home mode.

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This diagnostic trouble code, PTQ 522188.14, indicates that the transmission speed is too high during the shift operation, preventing the transmission from shifting to the commanded gear. The previously selected gear remains engaged, and shifting is not possible until the transmission speed is reduced.

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This diagnostic trouble code, PTQ 522150.14, is generated when the control software detects that the engine speed is too high for the requested gear or group. To protect the engine and transmission, the control software prevents the requested gear or group shift.

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