B0660low severityBody
Rear HVAC Blower Motor Circuit
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
Malfunction in the rear HVAC blower motor circuit for vehicles with rear climate control.
Symptoms
- Rear blower not working
- Rear blower only works on some speeds
- Rear blower noisy
- No air to rear passengers
Common causes
- Faulty rear blower motor
- Rear blower resistor failure
- Wiring damage
- Rear HVAC control panel fault
- Blown fuse
Diagnostic steps
- Check rear blower fuse
- Test rear blower motor
- Check rear blower resistor
- Test rear control panel
- Inspect wiring
Repair notes
Replace rear blower motor or resistor.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0007
Rear Left Side Airbag Deployment Circuit
B0008
Rear Right Side Airbag Deployment Circuit
B0010
Driver Side Airbag Deployment
B0011
Driver Side Airbag Deployment Circuit Open