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Home/DTC Codes/Toyota/4Runner/2003-2009 4.7L V8/U0203
U0203

Lost Communication with Trunk/Liftgate Module

2003-2009 Toyota 4Runner 4.7L V8

Low SeverityNetworkGeneric (SAE)

Description

Cannot communicate with the power trunk lid or liftgate control module.

Symptoms

  • Power liftgate not opening
  • Trunk release not working
  • Liftgate position unknown
  • Hands-free liftgate disabled

Common Causes

  • Liftgate module failure
  • CAN bus wiring
  • Module power loss
  • Fuse blown
  • Liftgate strut motor failure

Diagnostic Steps

  1. Check liftgate module fuse
  2. Test power and ground
  3. Check CAN wiring
  4. Test liftgate motor
  5. Check liftgate latch sensor

Repair Notes

Check fuses. Wiring at liftgate hinge flexes and commonly breaks.

Related Codes

U0140Lost Communication with Body Control Module

Other Network Codes

U0203 on Other Vehicles

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2003-2009 4.0L V6

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Toyota Altezza

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Common Questions

What does code U0203 mean on a 2003-2009 Toyota 4Runner?

U0203 stands for "Lost Communication with Trunk/Liftgate Module". Cannot communicate with the power trunk lid or liftgate control module.

What are the symptoms of U0203 on a Toyota 4Runner?

Common symptoms of U0203 include: Power liftgate not opening, Trunk release not working, Liftgate position unknown, Hands-free liftgate disabled.

What causes U0203 on a 2003-2009 Toyota 4Runner?

Common causes of U0203 include: Liftgate module failure, CAN bus wiring, Module power loss, Fuse blown, Liftgate strut motor failure.

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