How is the A/C pressure sensor installed and what steps are involved in the process on Honda Civic?

The HVAC Pressure Switch is mounted in the refrigerant line between the condenser and the evaporator, detecting low (28 psi) and high (455 psi) refrigerant line pressure, shutting the system off if the pressure falls below or exceeds these values. Begin by having the refrigerant discharged and recovered by an air conditioning technician. Next, set the parking brake, block the rear wheels, and raise the front of the vehicle, supporting it securely on jackstands, then remove the under-vehicle splash shield. Locate the switch on the right side of the vehicle and unplug the electrical connector from the HVAC Pressure Switch, ensuring clarity by removing the front bumper cover if necessary. Unscrew the pressure switch from the line, holding the stationary fitting with an open-end wrench to prevent damage. Lubricate the switch O-ring with clean refrigerant oil of the correct type, then screw the new switch onto the refrigerant line and tighten it securely. Reconnect the electrical connector and have the system evacuated, charged, and leak tested by an air conditioning technician.

Genuine Honda Civic HVAC Pressure Switch

Air Pressure Switch

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10 HVAC Pressure Switches found

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Honda Civic Sensor Assembly, Press
Part Number: 80450-T2F-A01
$87.52 MSRP: $123.61
You Save: $36.09 (30%)
ADD TO CART
Product Specifications
- Other Name: Pressure Switch; Pressure Sensor
- Replaces: 80450-SZW-003, 80450-SFE-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2006-2023 Honda Civic | 2 Door DX, 2 Door EX, 2 Door EX (Turbo), 2 Door EX (Turbo/6MT), 2 Door EX (Turbo/CVT), 2 Door EX-L, 2 Door LX, 2 Door LX (6MT), 2 Door LX (CVT), 2 Door SI, 2 Door Sport, 2 Door Sport (6MT), 2 Door Sport (CVT), 2 Door Touring, 2 Door Touring (Turbo), 4 Door DX, 4 Door EX, 4 Door EX (Turbo), 4 Door EX-A, 4 Door EX-L, 4 Door EX-T, 4 Door EX-TA, 4 Door EX-TL, 4 Door EX-TLA, 4 Door GX, 4 Door HF, 4 Door LX, 4 Door LX (6MT), 4 Door LX (AT), 4 Door LX (CVT), 4 Door LX-A, 4 Door LX-S, 4 Door MX, 4 Door MX (Hybrid), 4 Door SE, 4 Door SI, 4 Door Sport, 4 Door Sport (6MT), 4 Door Sport (CVT), 4 Door Touring, 4 Door Touring (Turbo), 5 Door EX, 5 Door EX-L, 5 Door LX, 5 Door SE, 5 Door Sport, 5 Door Touring LE, 5 Door Type R, 5 Door Type R (Touring), EX, EX-L, LX, Si, Sport, Sport Touring, Touring, Type R | KA 5AT, KA 5MT, KA 6MT, KA CVT, KL 5AT, KL CVT
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Honda Civic Switch, Air Conditioning (Dual) (Fuji)
Part Number: 80440-SS0-901
$75.83 MSRP: $107.10
You Save: $31.27 (30%)
ADD TO CART
Product Specifications
- Other Name: Pressure Cycling Switch
- Replaces: 80440-S84-A02, 80440-SS0-900, 80440-S84-A01, 80440-SK3-901
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1994-2000 Honda Civic | 2 Door DX, 2 Door EX, 2 Door HX, 2 Door SI, 3 Door CX, 3 Door DX, 3 Door SI, 3 Door VX, 4 Door DX, 4 Door DX-VP, 4 Door EX, 4 Door GX, 4 Door LX | KA 4AT, KA 5MT, KA CVT, KL 4AT, KL 5MT, KL CVT, KR 5MT, KW 5MT
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Honda Civic Switch, Air Conditioning (Dual) (Keihin)
Part Number: 80440-SW5-A01
$73.18 MSRP: $103.37
You Save: $30.19 (30%)
ADD TO CART
Product Specifications
- Other Name: Dual Pressure Switch; AC Switch, Pressure Switch
- Replaces: 80440-SW5-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2001-2005 Honda Civic | 2 Door DX, 2 Door EX, 2 Door HX, 2 Door LX, 4 Door DX, 4 Door DX-VP, 4 Door EX, 4 Door GX, 4 Door LX, 4 Door LX-CAR, 4 Door MX (Hybrid) | KA 4AT, KA 5MT, KA CVT, KL 4AT, KL 5MT, KL CVT
View related parts
Honda Civic Sensor Assembly, Pressure
Part Number: 80450-SZW-003
$87.52 MSRP: $123.61
You Save: $36.09 (30%)
ADD TO CART
Product Specifications
- Other Name: Pressure Sensor
- Replaced by: 80450-T2F-A01
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2012 Honda Civic | 2 Door EX, 2 Door EX-L, 2 Door LX, 2 Door SI, 4 Door EX, 4 Door EX-L, 4 Door GX, 4 Door HF, 4 Door LX, 4 Door LX (AT), 4 Door MX (Hybrid), 4 Door SI | KA 5AT, KA 5MT, KA 6MT, KA CVT, KL 5AT, KL CVT
View related parts
Honda Civic Switch, Air Conditioning (Dual) (Hadsys)
Part Number: 80440-SW5-003
$73.18 MSRP: $103.37
You Save: $30.19 (30%)
ADD TO CART
Product Specifications
- Replaced by: 80440-SW5-A01
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2001-2005 Honda Civic | 4 Door EX, 4 Door LX, 4 Door MX (Hybrid) | KA 4AT, KA 5MT, KA CVT, KL 4AT, KL 5MT, KL CVT
View related parts
Honda Civic Switch, Air Conditioning (Dual) (Saginomiya)
Part Number: 80440-SK3-901
$75.83 MSRP: $107.10
You Save: $31.27 (30%)
ADD TO CART
Product Specifications
- Replaced by: 80440-SS0-901
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1998-2000 Honda Civic | 2 Door DX, 2 Door HX | KA 4AT, KA 5MT, KA CVT, KL 4AT, KL 5MT, KL CVT, KW 5MT
- 1994-1996 Honda Civic | 2 Door DX, 2 Door HX, 4 Door EX | KA 4AT, KA 5MT, KA CVT, KL 4AT, KL 5MT, KL CVT
View related parts
Honda Civic Switch, Air Conditioning (Dual)
Part Number: 80440-S6A-003
Product Specifications
- Other Name: Dual Pressure Switch; Pressure Switch
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 2002-2005 Honda Civic | 3 Door SI | KA 5MT
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Honda Civic Switch, Air Conditioning (Dual)
Part Number: 80440-SL5-A01
Product Specifications
- Replaced by: 80440-SM4-003
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1993 Honda Civic | 2 Door DX, 2 Door EX, 2 Door EX-S, 3 Door CX, 3 Door DX, 3 Door SI, 3 Door VX, 4 Door DX, 4 Door EX, 4 Door LX | KA 4AT, KA 5MT, KL 4AT, KL 5MT
View related parts
Honda Civic Switch, Air Conditioning (Dual) (Fuji)
Part Number: 80440-SM4-003
Product Specifications
- Other Name: Dual Pressure Switch; Pressure Switch
- Replaces: 80440-SL5-A01, 80440-SD5-003, 80440-SR3-003, 80440-SM4-000
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1992-1993 Honda Civic | 2 Door DX, 2 Door EX, 2 Door EX-S, 3 Door CX, 3 Door DX, 3 Door SI, 3 Door VX, 4 Door DX, 4 Door EX, 4 Door LX | KA 4AT, KA 5MT, KL 4AT, KL 5MT
View related parts
Honda Civic Switch, Air Conditioning (Dual)
Part Number: 80440-SE0-003
Product Specifications
- Other Name: Dual Pressure Switch; Combination Switch
- Warranty: This genuine part is guaranteed by Honda's factory warranty.
Fits the following Vehicles:
- 1988-1991 Honda Civic | 3 Door DX, 3 Door SI, 3 Door STD, 4 Door DX, 4 Door EX, 4 Door LX, 5 Door (Wagovan), 5 Door 4WD, 5 Door DX | KA 4AT, KA 4MT, KA 5MT, KL 4AT, KL 4MT, KL 5MT

Honda Civic HVAC Pressure Switch Parts Questions & Experts Answers

Sensor Assembly, Press
80450-T2F-A01
Q: How is the A/C pressure sensor installed and what steps are involved in the process on Honda Civic?
A: The HVAC Pressure Switch is mounted in the refrigerant line between the condenser and the evaporator, detecting low (28 psi) and high (455 psi) refrigerant line pressure, shutting the system off if the pressure falls below or exceeds these values. Begin by having the refrigerant discharged and recovered by an air conditioning technician. Next, set the parking brake, block the rear wheels, and raise the front of the vehicle, supporting it securely on jackstands, then remove the under-vehicle splash shield. Locate the switch on the right side of the vehicle and unplug the electrical connector from the HVAC Pressure Switch, ensuring clarity by removing the front bumper cover if necessary. Unscrew the pressure switch from the line, holding the stationary fitting with an open-end wrench to prevent damage. Lubricate the switch O-ring with clean refrigerant oil of the correct type, then screw the new switch onto the refrigerant line and tighten it securely. Reconnect the electrical connector and have the system evacuated, charged, and leak tested by an air conditioning technician.

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