P1751

Factory Manual References

Factory service manual diagnostic procedure for 2005 audi allroad

01J, Constantly Variable Transmission (CVT)



DTC 18159 / P1751

Factory service manual diagram




Notes on DTC 18159 / P1751:
^ Condition for DTC recognition: Battery voltage above 16 volts.
^ This DTC was also displayed, for example, when jump starting with a 24 volt battery.

01L, 5 Speed A/T AWD



DTC 18159 / P1751

Factory service manual diagram




Note for DTC 18159 / P1751:
^ Conditions for fault recognition: Battery voltage higher than 16 Volt.
^ Battery monitoring differentiates between four areas: (U = battery voltage) First U < 7 Volt => Transmission goes into mechanical backup with non-active control module; Second 7 Volt< U < 9 Volt=^Transmission range is held for about 2.5 sec., if U is then still in this range, the transmission goes into mechanical backup with non-active control module; Third 9 Volt < U < 16 Volt -> voltage is OK; Fourth U > 16 Volt => transmission goes into mechanical backup with non-active control module.

01V, 5 Speed A/T



DTC 18159 / P1751

Factory service manual diagram




Note:
For DTC 18159 / P1751:

^ Requirement for malfunction recognition: Battery voltage larger than 16 Volts.

^ The battery monitoring differentiates four ranges: (U = Battery voltage) 1. U < 7 Volts transmission switches into emergency running mode; 2. 7 Volts < U < 9 Volts gear is held for approx. 2.5 seconds, if voltage is still in this range, the transmission shifts into emergency running mode; 3. 9 Volts < U < 16 Volts Voltage is OK; 4. U > 16 Volts transmission shifts into emergency running mode.

Supporting Diagrams & Locations

Reference material from the factory manual for this diagnostic procedure.

Diagram

2.7L Turbo

Diagram

4.2L

Diagram

2.7L Turbo

Diagram

4.2L

Diagram

2.7L Turbo

Diagram

4.2L

Location

00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)

Location

57 Vehicle Locking System, Diagnostic Information (GROUP 57, NO. 24-65)

Location

00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)

Location

00 Software Version Management (SVM), Operating Instructions (GROUP 00, NO. 21-55)