📡Microwave

C-d0

Samsung · Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave

Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave C-d0 Error Fix: Main Board Communication Error

Communication fault on the main control board. Same troubleshooting as E-23 — power cycle, check wire connections. If persistent, replace the main control board.

warning2 fixes available✨ Free fix available

Quick Answer

Error C-d0 on the Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave means: Main Board Communication Error. The top-ranked community fix is “Replace the Main Control Board” (hard difficulty, ~60 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $200-$300.

Other Samsung Models with Error C-d0

Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave

microwave · 2 fixes

Samsung NE63A6511SS 6.3 cu. ft. Smart Freestanding Electric Range

oven · 2 fixes

Samsung NX60A6511SS 6.0 cu. ft. Smart Freestanding Gas Range

oven · 2 fixes

Other Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave Error Codes

C-d1

Sub-Board Communication Error

Door Sensor Error

Magnetron Overheat

Magnetron / Inverter Error

2 fixes

E-13

Inverter Board Failure

Touchpad / Key Error

Relay Stuck Closed — Safety Hazard

2 fixes

E-23

Display Board Communication Error

2 fixes

People Also Ask About Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave Error C-d0

What does error code C-d0 mean on a Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave?

Error code C-d0 on the Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave means: Main Board Communication Error. Communication fault on the main control board. Same troubleshooting as E-23 — power cycle, check wire connections. If persistent, replace the main control board.

How do I fix error code C-d0 on my Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave?

The most successful fix is "Replace the Main Control Board" (hard difficulty, ~60 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code C-d0 on a Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave error C-d0 myself?

Yes — the top-ranked community fix ("Replace the Main Control Board") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Nut driver set.

How much does it cost to repair Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave error C-d0?

DIY cost: $15-$25. Professional repair typically costs $200-$300. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave have?

The Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave has 8 other known error codes, including: C-d1 (Sub-Board Communication Error), DOOR (Door Sensor Error), E-11 (Magnetron Overheat), E-12 (Magnetron / Inverter Error), E-13 (Inverter Board Failure), and 3 more.

Which other Samsung models have the C-d0 error?

Error code C-d0 also appears on 3 other Samsung models: Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave, Samsung NE63A6511SS 6.3 cu. ft. Smart Freestanding Electric Range, Samsung NX60A6511SS 6.0 cu. ft. Smart Freestanding Gas Range. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave have?

The Samsung Samsung ME21M706BAS 2.1 cu. ft. Over-the-Range Microwave has 8 other known error codes:

C-d1 — Sub-Board Communication Error (2 fixes)
DOOR — Door Sensor Error (2 fixes)
E-11 — Magnetron Overheat (2 fixes)
E-12 — Magnetron / Inverter Error (2 fixes)
E-13 — Inverter Board Failure (2 fixes)
E-21 — Touchpad / Key Error (2 fixes)
E-22 — Relay Stuck Closed — Safety Hazard (2 fixes)
E-23 — Display Board Communication Error (2 fixes)

Which other Samsung models have the C-d0 error?

Error code C-d0 also appears on 3 other Samsung models:

Samsung MS19M8000AS 1.9 cu. ft. Countertop Microwave (microwave) · 2 fixes
Samsung NE63A6511SS 6.3 cu. ft. Smart Freestanding Electric Range (oven) · 2 fixes
Samsung NX60A6511SS 6.0 cu. ft. Smart Freestanding Gas Range (oven) · 2 fixes

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