Lost Communication with Electronic Shift Module
2014-2014 Cadillac SRX 3.0L V6
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed u0156 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the electronic range select or column/console shifter module.
Symptoms
- Cannot shift out of park
- Shift indicator incorrect
- Gear selection not recognized
- Transmission defaults to limp mode
Common Causes
- Shift module failure
- Wiring issue
- Module power loss
- Fuse blown
- Shifter mechanism jam
Diagnostic Steps
- Check shift module fuse
- Test power and ground
- Check wiring to shifter
- Test shift position sensor
- Check for mechanical shifter issues
Repair Notes
Check brake-shift interlock solenoid and fuses. Override button usually on shifter for emergency.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0156 on Other Vehicles
Common Questions
What does code U0156 mean on a 2014-2014 Cadillac SRX?
U0156 stands for "Lost Communication with Electronic Shift Module". Cannot communicate with the electronic range select or column/console shifter module.
What are the symptoms of U0156 on a Cadillac SRX?
Common symptoms of U0156 include: Cannot shift out of park, Shift indicator incorrect, Gear selection not recognized, Transmission defaults to limp mode.
What causes U0156 on a 2014-2014 Cadillac SRX?
Common causes of U0156 include: Shift module failure, Wiring issue, Module power loss, Fuse blown, Shifter mechanism jam.
Last updated: March 2026