Goodman AC & Heat Pump Error Code 02: Meaning & How to Fix It

By the ErrorCodePro Editorial Team · Last reviewed October 20, 2026

Goodman ac & heat pump error code 02 means: High side fault or high pressure switch open. Listed causes: a blocked condenser (outdoor) coil or the outdoor fan not running. Shown as L2 when the control locks out. [1] Keep using it? Only if the code clears after the owner checks; if it returns, leave the system off and call an HVAC technician. Start with the owner checks below, beginning with: clear around the outdoor unit.

Source: Goodman GSXC7 installation instructions, unitary diagnostic codes, via Alpine Home Air (manual copy) [1].

Quick facts

Code	02
Also shown as	L2
Brand / appliance	Goodman ac & heat pump (gsxc7 variable-speed air conditioners (7-segment diagnostic display))
System	Venting / airflow
Meaning (service chart)	High side fault or high pressure switch open. Listed causes: a blocked condenser (outdoor) coil or the outdoor fan not running. Shown as L2 when the control locks out. [1]
Keep using it?	Only if the code clears after the owner checks; if it returns, leave the system off and call an HVAC technician
DIY-safe?	Owner checks only (listed below)
Support	Goodman dealer or Goodman customer support (goodmanmfg.com)
Source document	Goodman GSXC7 installation instructions, unitary diagnostic codes (via Alpine Home Air (manual copy))

On this page: Meaning · Steps · Parts · When to call a technician · Related codes · FAQ

What error code 02 means on a Goodman ac & heat pump

High side fault or high pressure switch open. Listed causes: a blocked condenser (outdoor) coil or the outdoor fan not running. Shown as L2 when the control locks out. [1]

This is a venting / airflow code. Codes and wording can vary by model, so check your owner's manual for your model number.

How to fix Goodman ac & heat pump error code 02 (safe owner checks)

Owner checks only: on heating, cooling and water-heating equipment, limit yourself to reading the code and checking the thermostat, breaker and service switch, air filter, condensate drain, that the gas supply valve is open (no disassembly) and that vent terminals are clear of snow or debris. Reset power only if your manual allows it.

Safety first: disconnect power before you remove any panel or reach into the sump or drum. Do not touch wiring, the control board or the motor. If you see water near electrical parts, stop and call a technician. These steps are based on the Goodman GSXC7 installation instructions, unitary diagnostic codes (via Alpine Home Air (manual copy)) [1], rewritten for clarity.

Clear around the outdoor unit. Remove leaves, grass clippings, covers and anything stacked against the outdoor unit. Keep about two feet clear on all sides and nothing on top.
Rinse the outdoor coil. Switch off the outdoor disconnect and the AC breaker first. Then gently rinse the outdoor coil fins from outside with a garden hose (no pressure washer) and let it dry before restoring power.
Restart and watch. Restore power, set the thermostat back to cooling or heating and check whether code 02 returns. If it does, call an HVAC technician; the remaining causes need gauges, meters or refrigerant work.

Owner steps are general safe checks added by ErrorCodePro; the manual's own corrective actions are technician procedures and are listed under When to call a technician.

Parts that may be involved

Exact parts depend on your model number. This page lists part types only, never part numbers.

Outdoor fan motor
Outdoor fan capacitor

When to call a technician

The outdoor fan does not spin
Fan motor, wiring or capacitor checks
Gas valves, burners, igniters, flame sensors, venting/flue or CO concerns: licensed HVAC technician or plumber
Refrigerant work: EPA 608-certified technician only
Smell of gas: leave and call the gas utility or 911
Anything involving wiring, the control board, the motor or the water valve electrics
The appliance is under warranty: contact Goodman dealer or Goodman customer support (goodmanmfg.com) first

Frequently asked questions

What does error code 02 mean on a Goodman ac & heat pump?

The Goodman GSXC7 installation instructions, unitary diagnostic codes lists 02 as follows: High side fault or high pressure switch open. Listed causes: a blocked condenser (outdoor) coil or the outdoor fan not running. Shown as L2 when the control locks out.

Is it safe to keep using the ac & heat pump with 02?

Only if the code clears after the owner checks; if it returns, leave the system off and call an HVAC technician.

Can I fix Goodman ac & heat pump error 02 myself?

Only with the owner checks on this page, starting with: clear around the outdoor unit. If it persists, call a technician or Goodman dealer or Goodman customer support (goodmanmfg.com).

Is L2 the same as 02?

Yes. The source chart lists L2 with the same meaning as 02; the display format depends on the model.

Sources

Alpine Home Air (manual copy): Goodman GSXC7 installation instructions, unitary diagnostic codes (third-party copy of manufacturer service data)

Last reviewed: October 20, 2026. ErrorCodePro is not affiliated with Goodman.