Lost Communication with Electronic Shift Module
2003-2009 Toyota 4Runner 4.7L V8
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
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0156 on Other Vehicles
Toyota 4Runner
2003-2009 4.0L V6
Toyota 4Runner
2010-2024 4.0L V6
Toyota 86
2017-2020 2.0L H4
Toyota Alphard
2023-2025 2.4L I4 Turbo T24A-FTS
Toyota Alphard
2023-2025 2.5L I4 Hybrid A25A-FXS
Toyota Altezza
1998-2005 2.0L I4 3S-GE BEAMS
Toyota Altezza
1998-2005 2.0L I6 1G-FE
Toyota Aqua
2011-2021 1.5L I4 Hybrid 1NZ-FXE
Common Questions
What does code U0156 mean on a 2003-2009 Toyota 4Runner?
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 Toyota 4Runner?
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 2003-2009 Toyota 4Runner?
Common causes of U0156 include: Shift module failure, Wiring issue, Module power loss, Fuse blown, Shifter mechanism jam.