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2017 CR-V AC just blowing warm air - what gives?

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Mike T. · rep 0 · May 25, 1:51 AM · 1 replies · solved · Question

Vehicle: 2017 Honda CR-V EX-L

My 2017 Honda CR-V EX-L's AC has suddenly stopped blowing cold air. It just feels like a fan now, even on full blast. I live in a hot climate and this is becoming unbearable.

I've checked the cabin air filter, and it seems fine. The fan works, but the air coming out is just ambient temperature. There are no strange noises when I turn the AC on.

Is this a common issue with these CR-Vs? What should I be looking for before I take it to the shop? I'm hoping it's not a major repair.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:51 AM

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ClearTheCode admin answer:

Experiencing warm air from your 2017 Honda CR-V's AC is a common complaint, and there are several potential causes. It's essential to diagnose it properly to avoid unnecessary repairs.

Common Causes:

  • Low Refrigerant: The most frequent culprit. A leak in the AC system will cause refrigerant levels to drop, leading to poor cooling performance. This is often due to porous hoses or a leaky condenser.
  • AC Compressor Failure: The compressor is the heart of the AC system. If it's not engaging or has internal issues, it won't circulate refrigerant effectively. The compressor clutch might also fail to engage.
  • Electrical Issues: A blown fuse, a faulty relay, or wiring problems can prevent the compressor from turning on.
  • Condenser Blockage: Debris blocking the condenser can hinder heat exchange.

What You Can Do (DIY Diagnostics):

  1. Check for Compressor Engagement: With the engine running and AC on max cold, look at the front of the AC compressor. The clutch should be spinning. If it's not, it indicates a problem with refrigerant levels, electrical supply, or the compressor itself.
  2. Inspect Fuses: Check the AC compressor fuse in your under-hood fuse box. Consult your owner's manual for the exact location and rating.
  3. Visual Inspection for Leaks: Look for oily residue around AC lines and components, which can indicate a refrigerant leak (refrigerant oil is often present with leaks).

When to See a Shop:

  • If the compressor isn't engaging: This often points to low refrigerant, a faulty pressure switch, or a compressor issue that requires professional diagnosis and specialized tools.
  • If you suspect a leak: AC systems are sealed, and adding refrigerant without fixing a leak is a temporary solution. A professional can use UV dye or a sniffer tool to pinpoint leaks.
  • If the issue persists after basic checks: Electrical diagnostics for AC systems can be complex and are best left to a certified technician. They can also check for any relevant Technical Service Bulletins (TSBs) for your specific model year that might address known AC issues.
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