C1298 Linear solenoid circuit fault in 4WD coupling control. The rear coupling current is out of range
What does C1298 mean on a Toyota?
C1298. Linear solenoid circuit fault in 4WD coupling control. The rear coupling current is out of range. This Toyota-enhanced code applies to RAV4, Highlander with electronic 4WD coupling, 2004 to 2012.
Common causes of C1298
- Failed electromagnetic coupling solenoid
- Open in coupling harness
- Short in coupling harness
- Corroded rear diff connector
- Failed 4WD control ECU
How to fix C1298
- Inspect rear coupling connector for damage
- Test solenoid resistance at coupling
- Check harness along rear subframe
- Measure control current with scanner
- Replace coupling unit if circuit tests good