C1500: Transfer Case Contact Plate "B" Encoder Circuit Failure
What Does C1500 Mean?
C1500 is a diagnostic trouble code indicating: Transfer Case Contact Plate "B" Encoder Circuit Failure. This code relates to the chassis system. It has been reported in NHTSA complaints across 3 different vehicle models.
Symptoms of C1500
- ⚠️ Steering issues
Common Causes
- 🔍 Wiring or connector problem
C1500 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"DT: 2005 CHEVY C1500 HALF TON PICKUP T WAS PLACED IN STORAGE FOR ABOUT A MONTH. THIS VEHICLE WAS NEVER USED AND HAD ONLY 13 MILES ON THE SPEEDOMETER WHEN RECIEVED FROM THE DEALER. THIS WAS A COMPANY VEHICLE, AND WHEN OUT OF STORAGE IT WAS DISCOVERED THERE WAS NO BRAKE FLUID. THE MASTER CYCLINDER"
— Chevrolet Silverado owner, 07/11/2005
"WHILE MAKING A LEFT TURN FROM A 60 MPH HIGHWAY IN MY 2006 CHEVROLET C1500 TRUCK MY RIGHT REAR AXLE CAME COMPLETELY OUT WITH TIRE STILL ATTACHED. THANK GOD I HAD SLOWED TO ABOUT 20 MPH TO MAKE THE LEFT TURN WHEN IT HAPPENED OR A CRASH COULD HAVE RESULTED. I AM REPORTING THIS BECAUSE AS I SAID I WAS O"
— Chevrolet Silverado owner, 11/25/2010
"C1500 AT TIMES WHEN STOPPING WILL SHUT DOWN, ALL LIGHTS ON THE DASH BOARD WILL LIGHT UP AND WHOLE TRUCK WILL SHAKE. TOOK TO CHEVY DEALER SHIP THEY SAID NEEDED NEW MOTOR.. ALREADY PUT TOP END OF MOTOR IN 1 1/2 YEARS AGO - SAME THING IS HAPPENING NOW BUT THEY SAY NEEDS NEW MOTOR. LET TRUCK SET FOR S"
— Chevrolet Silverado owner, 08/13/2018
Source: NHTSA Complaints Database
Most Reported Vehicles for C1500
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHEVROLET SILVERADO | |
| 2 | GMC SIERRA | |
| 3 | MERCEDES-BENZ C-CLASS |
C1500 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Inspect wiring harness and connectors for damage, corrosion, or loose connections
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.