01 That Rotten Egg Smell From Your Exhaust Isn't Normal: Here'… • 02 Porsche vs. Mercedes vs. BMW vs. Audi: Which Brand Will Las… • 03 17 Reasons Your Car Won’t Start and How to Resolve Them • 04 How To Fix Automatic Transmission Not Shifting • 05 Can a Hybrid Car Survive a Flood? Understanding the Risks a… • 06 Understanding Clutches: Types, Advantages, and Disadvantage… • 07 P0034 Turbo charger bypass valve control circuit low • 08 BMW Unveils New Armored i7 and V8 7 Series for High-Profile… • 09 Starting A Car Dealership Business: What You Need To Know • 10 You Could Turn A Cheap Repair Into A Catastrophic Bill By W… •

DTC codes / C05xx · Brakes, steering and suspension / C05DC

C05DC4WD/AWD Clutch A Temperature Too High

This code means the all-wheel-drive or four-wheel-drive control module has determined that the clutch pack responsible for engaging the secondary axle has exceeded its safe operating temperature. The module monitors a temperature sensor or calculates heat from clutch slip and engagement time, and it sets this code when the calculated or measured temperature crosses a calibrated threshold.

SystemChassis
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaBrakes, steering and suspension

Symptoms you may notice

  • The all-wheel-drive or four-wheel-drive warning light illuminates steadily on the dashboard.
  • The vehicle may default to two-wheel drive, with a noticeable loss of traction on slippery surfaces.
  • A burning or hot clutch smell may be present after extended low-speed maneuvering or towing.
  • The system may shudder or clunk during tight turns as the clutch engages and disengages abruptly.
  • Often no symptoms besides the warning light, especially if the overheat event was brief and has since cooled.
  • The code may clear itself after the clutch cools, only to return under the same driving conditions.

Common causes, most likely first

  1. Extended low-speed driving with the clutch partially engaged, such as repeated tight parking maneuvers or rock crawling.
  2. Towing or hauling a heavy load beyond the rated capacity, which keeps the clutch working continuously.
  3. Low or degraded clutch fluid, or a fluid that has broken down from repeated heat cycles and no longer lubricates or cools effectively.
  4. A sticking or slow-responding clutch actuator or control solenoid that keeps the clutch engaged longer than commanded.
  5. A faulty clutch temperature sensor or a wiring fault in its circuit, causing a false high reading.
  6. Mechanical wear or incorrect clutch pack clearance that increases slip and heat generation.
  7. A restricted or failing clutch cooling circuit, such as a blocked cooler or a weak circulation pump on fluid-cooled systems.

How to diagnose and fix it

  1. Scan all modules and record freeze-frame data for this code, noting vehicle speed, clutch temperature, and duty cycle at the time of the fault.
  2. Inspect the clutch fluid level and condition, looking for dark or burnt fluid that indicates overheating, and service it if contaminated.
  3. Check the clutch temperature sensor and its wiring for resistance out of specification, corrosion, or chafed harness sections.
  4. Command the clutch actuator or control solenoid with a scan tool and verify it engages and releases smoothly without sticking.
  5. Verify the cooling circuit, including the cooler and any circulation pump, for restriction or failure if the system is fluid-cooled.
  6. Measure clutch pack clearance and inspect the friction plates for glazing, scoring, or wear if the fault returns after fluid service.
  7. Clear the code and perform a relearn or calibration procedure, then road-test under the conditions that originally set the code.

Why the clutch overheats without a heavy load

  • A binding or dragging brake on the secondary axle can make the all-wheel-drive clutch work constantly to compensate, overheating it without any obvious driver complaint.
  • Mismatched tire sizes or uneven tire wear between the front and rear axles causes a permanent speed difference that keeps the clutch slipping and generating heat.
  • A failing wheel speed sensor or steering angle sensor can feed bad data to the control module, which then commands clutch engagement when none is needed.
  • The code does not always mean the clutch is damaged; a brief overheat event from a single low-speed maneuver can set it with no lasting harm once the unit cools.
  • After any repair, the control module may need a clutch calibration or adaptation reset, or the code will return immediately even though the fault is fixed.

Can I keep driving with C05DC?

You can usually drive the vehicle to a repair shop, but avoid towing, heavy loads, and repeated tight low-speed maneuvers until the fault is diagnosed. If the warning light is accompanied by a burning smell or the system has disabled all-wheel drive, keep the drive short and gentle.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage