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HYDRA – MATIC 4L40 – E / 5L40 – E

DIAGNOSTIC TROUBLE CODES (DTC) AND DESCRIPTION
DTC BMW CODEDESCRIPTION
P1779
P1780
P1791
P1792
P1793
P1795
P1815 60
60
60
60
60
60
60
0
0
149
148
147
147
145
146
84
16
17
18
4
P1818
P1820
P1822
P1823
P1825
P1826
P1831
P1832
P1833
P1834
P1842
P1843
P1845
P1847
P1864
P1865
P1866
P1867
P1868
U2105
Invalid Engine Torque Signal
Invalid Accelerator Pedal Position (APP) sensor signal
Invalid Throttle Plate Position (TPP) sensor signal from the ECM
Invalid Internal Mode Switch (IMS) state while engine is being started
IMS signal indicates forward range, gear ratio indicates Reverse
Internal Mode Switch (IMS) signal "A" shorted to ground
Internal Mode Switch (IMS) signal "C" is high while in a forward gear
Pressure Control Solenoid circuit shorted to ground
Pressure Control Solenoid circuit shorted to voltage
Shift Solenoid power wire circuit shorted to ground
Shift Solenoid power wire circuit shorted to voltage
1-2 Shift Solenoid "A" circuit open or shorted to ground
2-3 Shift Solenoid "B" circuit open or shorted to ground
4-5 Shift Solenoid "C" circuit open or shorted to ground
TCC/PWM Solenoid circuit open or shorted to ground
TCC/PWM Solenoid circuit shorted to voltage
Calculated transmission fluid life remaining is 10% or less
TCM has not recieved ECM data within the preset time parameters
4-5 Shift Solenoid "C" circuit shorted to voltage
2-3 Shift Solenoid "B" circuit shorted to voltage
1-2 Shift Solenoid "A" circuit shorted to voltage
Internal Mode Switch (IMS) D2 and D3 transitional error
Internal Mode Switch (IMS) Neut and D5 transitional error
Internal Mode Switch (IMS), combination of switch inputs invalid
Invalid Wheel Speed data from the ECM
Engine Coolant Temperature (ECT) sensor circuit
Engine Torque Reduction request has failed
Figure 11
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
13
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