Skip to main content
Error code reference
Denso Air Conditioner Error Code HP
Activation of high pressure switch: blinks when high pressure switch activates 3 times in 24 hours; turns on solid when activated 10 times in 24 hours.
SourceDENSO Classic 40 - Full Service Manualp. 44
Diagnostic procedure
The full HP procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
See troubleshooting chart on page 47. To reset: hold down SET TEMP UP and DOWN buttons simultaneously for 3 seconds.
SourceDENSO Classic 40 - Full Service Manualp. 44
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock HP procedure $9.95
Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.
Where this code is documented
5 manuals in the MyPros+ library document this code for Denso air conditioner.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
Get Started$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax