GE Range Bad Line — What It Means & How to Fix It
Also shown as BL, bL on some models.
'Bad Line' (BL) on a GE range means the 240-volt supply isn't correct — a missing leg, wrong outlet, or open neutral. It's mains-wiring territory for an electrician.
What this code means
GE ranges display 'Bad Line' (BL on some models) when the control detects that the 240-volt supply doesn't look right: one of the two hot legs is missing, neutral is open, the outlet is wired wrong, or the range is plugged into a 120-volt outlet. The range may power partially — lights and display can work off one leg — while heating behaves strangely, because heating needs both legs. Because the fault is in the fixed wiring or the cord, the fix belongs to a licensed electrician.
GE shows the supply-condition message as 'Bad Line', with BL and bL on other display generations. If the range works fine sometimes and shows Bad Line at other times, that is still wiring-side — an intermittent loose connection in the line or cord. The model number is on the frame behind the storage drawer.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Range plugged into a 120V outlet instead of 240V | Common | Yes — check the plug |
| One leg of the 240V supply missing at the outlet | Common | No — electrician job |
| Open neutral in the outlet or cord | Occasional | No — electrician job |
| Mis-wired power cord on the range | Occasional | No — electrician job |
What you can try yourself
- Confirm the range's plug is in a proper 240-volt outlet — a 120-volt outlet or an adapter explains 'Bad Line' instantly.
- Check that the breaker for the range is fully on; a half-tripped double breaker drops one leg.
- If both check out, stop — the next steps (outlet wiring, cord connections, neutral) are live-panel and mains work for a licensed electrician.
- An electrician will verify both legs and neutral under load at the outlet and range connection, then re-terminate whatever is loose or mis-wired.
When to call a technician
- Every part of Bad Line is a stop sign for DIY — it names the mains supply to a major 240-volt appliance.
- The range heats on one side or element only while the lights and clock work.
- A breaker that trips, a warm outlet, or a burning smell from the receptacle.
Typical professional repair cost: Electrician visit to correct the outlet or cord wiring typically runs $150–$350 including labor.
Frequently asked questions
Why would the clock work on a range with Bad Line?
The display and controls are powered by half the circuit (one leg), while the heating elements need both legs. When one leg is missing, the brain lives but the burners starve — GE reads that imbalance and prints Bad Line.
Can I check the voltage myself?
At the outlet, carefully, with a multimeter to ground, you can probe for two hot legs — but opening the panel or testing under load crosses into electrician territory, backed by code. When in doubt, let them.
Did my range come from the store mis-wired?
Usually the outlet or the cord connection is the issue — the plug, receptacle, or the cord terminals on the range were wired wrong or came loose. Either way it's termination work, not a new range, and not a DIY.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related GE codes
- GE Range F2 F2 (F20 on some models) on a GE range is the over-temperature alarm: the oven exceeded its heat limit — usually a stuck bake or broil element, sometimes a sensor.
- GE Range F1 F1 on a GE range points at the keypad (keypanel): a stuck key, moisture under the touch panel, or the keypad's own circuit — occasionally the control board behind it.
- GE Range F3 F3 on a GE range is the oven temperature sensor fault — the probe reads open circuit (F4 is the shorted variant). Reset first, then a sensor or wiring diagnosis.
- GE Range F5 F5 on a GE range is the control-board fault: the main electronic control isn't behaving — shown as F8 or FF on some models. Reset once; recurring F5 means a board.
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