C0845 moderate

Transfer Case Motor Circuit

The C0845 code means the vehicle's onboard diagnostic system has detected: Transfer Case Motor Circuit. This is a moderate severity code.

My Garage →
Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$200 - $900 (parts and labor)
Read ABS Codes
BlueDriver Bluetooth Pro Scanner

Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Read ABS Codes
LAUNCH CRP123X (Reads ABS + Chassis)

Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Common Symptoms

  • 4WD warning light on
  • Differential lock indicator on
  • Transfer case grinding noise
  • Front axle engagement issues

Probable Causes (Ranked by Likelihood)

  • Failed axle speed sensor Very High
  • Damaged differential lock motor High
  • Transfer case motor failure Moderate
  • Low differential fluid level Low

Step-by-Step Diagnostic Procedure

  1. Scan 4WD module for specific codes

  2. Test differential lock motor operation

  3. Check transfer case fluid level

  4. Inspect axle sensor wiring and connectors

Frequently Asked Questions

What does code C0845 mean?

C0845 indicates a fault with the transfer case motor circuit.

Can I drive with C0845?

You can drive short distances at low speeds. Avoid highway driving until repaired.

How much does it cost to fix C0845?

Typical repair costs are $200 - $900 (parts and labor).

Sources

This page is built from documented references. Verify against your own service info before repair work.

Explore More

Was this helpful?

Share carcodefinder.com with a friend who needs to decode their check engine light.