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© 1-15 AS Tronic fault codes AS TRONIC DAVIE XD diagnostics manual 3 3146 Rear-mounted range box does not disengage insufficient air pressure available - internal modulator fault (D954); selector - mechanically defective gearbox When driving: if the rear-mounted range box is not - automatic mode not available At standstill: if it is impossible to shift the low range, the - new attempts to shift the rear-mounted 3147 Rear-mounted range box neither shifts in the high insufficient air pressure available - internal modulator fault (D954); selector - mechanically defective gearbox - If the selected range cannot be engaged - If the last selected range can no longer be - New attempts to shift the rear-mounted - Automatic mode not available 3148 Splitter range does not disengage from last insufficient air pressure available - internal modulator fault (D954); selector - mechanically defective gearbox When driving: if the selected gear cannot be engaged, the - only the gears in the last selected position of - automatic mode not available At standstill: only the drive-off gears in the last selected 3149 Splitter range does not disengage from the last insufficient air pressure available - internal modulator fault (D954); selector - mechanically defective gearbox When driving: if the selected gear cannot be engaged, the - only the gears in the last selected position of - automatic mode not available At standstill: only the drive-off gears in the last selected 3150 Splitter range neither shifts in the high range nor insufficient air pressure available - internal modulator fault (D954); selector - mechanically defective gearbox - Fault is stored during standstill - System is not available Fault code Fault code description with possible cause Symptom |