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ErrBase

Goodman Furnace Error Codes

All Goodman furnace error codes with step-by-step troubleshooting, multimeter specs, and OEM part numbers.

14 error codes

CodeMeaning
1DLThe control board's internal watchdog timer has tripped, indicating a communication error, internal board fault, or an abnormal operating condition that the main processor could not resolve.
moderateadvanced
7P1The draft inducer (combustion air blower) motor failed to start, stalled, or did not reach operating speed within the allowed time.
highintermediate
9HThe high-stage pressure switch opened during operation, indicating that induced draft pressure is too high, too low, or that the secondary heat exchanger is restricted on condensing models.
highintermediate
E1CThe flame sensor is detecting a flame signal when no call for heat is active and no ignition sequence has been initiated - an unexpected and potentially dangerous condition.
moderateintermediate
E2The rollout limit switch has tripped, indicating that flames have exited the combustion chamber and moved toward areas they should not reach.
criticaladvanced
E3The draft inducer blower failed to prove operation during the pre-purge sequence, either by not reaching speed or not satisfying the pressure switch within the allowed time.
highintermediate
E5A general pressure switch circuit fault - the switch circuit is either open when it should be closed, short-circuited, or the switch failed to transition correctly during the startup sequence.
highintermediate
EAFThe flame sensor is reading a microamp signal that falls outside the acceptable range during a heat cycle - either too weak to confirm a stable flame or erratic.
moderateintermediate
EE3The furnace has experienced three consecutive F01-type ignition failures in a row without a successful heat cycle between them, triggering a deeper lockout state.
highintermediate
EE5The furnace has failed ignition five consecutive times without any successful heat cycle, entering the deepest safety lockout state. A 3-second power reset hold is required to clear.
highintermediate
F01The furnace attempted ignition three times and failed to detect a flame each time, triggering a safety lockout.
highintermediate
F02The pressure switch is detecting pressure (closed/triggered) before the inducer motor has started, which indicates a condensate drain backup, kinked hose, or failed switch.
moderateintermediate
HUBComplete reference for all Goodman furnace LED flash codes and alphanumeric fault codes displayed on the control board.
lowbeginner
RESETStep-by-step instructions for performing soft resets, hard resets, and manual switch resets on Goodman furnaces to clear LED fault codes after diagnosing and fixing the root cause.
lowbeginner