U0403 — Invalid Data Received From Transfer Case Control Module

Q: "Can I drive with this code?"

"It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon."

Q: "Will this code clear itself?"

"Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first."

Q: "How do I find the exact cause?"

"A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component."

What Does U0403 Mean?

U0403 is a diagnostic trouble code indicating: Invalid Data Received From Transfer Case Control Module. This code relates to the network communication system. It has been reported in NHTSA complaints across 1 different vehicle models.

Symptoms of U0403

⚠️ Jerking or surging while driving

Common Causes

🔍 Sensor or control module malfunction

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"While driving, car reved itsself up and when in neutral, sensor said 4wd Neutral Warning Vehicle May move even in park…..4wd System unavailable service required…Had a diagnostic done of the sensor light that came on. Diagnostic said codes u0403 for T-Case, C14A7 PTU motor. After much reading and res"
— Jeep Cherokee owner, 12/31/2023

Source: NHTSA Complaints Database

Most Reported Vehicles for U0403

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	JEEP CHEROKEE

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

U0403: Invalid Data Received From Transfer Case Control Module