2021 Honda Civic Electrical Switch & Relay Parts

This table covers the A/C Pressure Safety switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: VEMO V26730082.

This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 A/C Refrigerant Pressure Switch parts are listed for the 2021 Honda Civic, from FOUR SEASONS and UAC. All of them fit every engine offered in the 2021 Civic.

Part numbers include FOUR SEASONS 37312 and UAC SW9970C.

This table covers the relays that control the Accessory Power circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

5 Accessory Power Relay parts for the 2021 Honda Civic come from 2 brands — STANDARD MOTOR PRODUCTS and HOLSTEIN. The "Popular" part is STANDARD MOTOR PRODUCTS RY716. Every part fits all 3 engine options (1.5L L4 Turbocharged, 2.0L L4 and 2.0L L4 Turbocharged).

This group includes STANDARD MOTOR PRODUCTS RY716, HOLSTEIN 2RSW0025 and STANDARD MOTOR PRODUCTS RY1052T and the remaining parts above.

This table covers the Back Up / Reverse Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

One part is listed for the 2021 Honda Civic — STANDARD MOTOR PRODUCTS LS426.

This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

4 Blower Motor Relay parts are listed for the 2021 Honda Civic, from STANDARD MOTOR PRODUCTS, DENSO and HOLSTEIN. 3 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: DENSO 5670003, HOLSTEIN 2RSW0025 and STANDARD MOTOR PRODUCTS RY1052T, plus the other parts above.

This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

6 Brake Light Switch parts are listed for the 2021 Honda Civic, from DORMAN, HOLSTEIN, STANDARD MOTOR PRODUCTS and 3 other brands. STANDARD MOTOR PRODUCTS SLS588 carries the "Popular" badge. All of them fit every engine offered in the 2021 Civic.

In the Economy grade, DORMAN and HOLSTEIN supply 2 parts: the catalog's value-priced group. A representative part number is DORMAN 920469.

The Standard Replacement section lists 4 options from STANDARD MOTOR PRODUCTS, WELLS, BECK/ARNLEY and 1 other brand — built to original-equipment specification. STANDARD MOTOR PRODUCTS SLS588 is listed in this group.

Listed part numbers: STANDARD MOTOR PRODUCTS SLS588, DORMAN 920469 and HOLSTEIN 2BLS0028, plus the other parts above.

This table covers the relays that control the Daytime Running Light circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2021 Honda Civic — DENSO 5670003.

This table covers the relays that control the Defroster circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

4 Defroster Relay parts are listed for the 2021 Honda Civic, from STANDARD MOTOR PRODUCTS, DENSO and HOLSTEIN. 3 parts fit every engine; the other 1 is engine-specific.

Part numbers include DENSO 5670003, HOLSTEIN 2RSW0025 and STANDARD MOTOR PRODUCTS RY1052T, among others listed above.

This table covers the dimmer switches that select headlamp high and low beam. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS CBS2177.

This table covers the Door Lock switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

2 Door Lock Switch parts are listed for the 2021 Honda Civic, from STANDARD MOTOR PRODUCTS and WELLS. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: STANDARD MOTOR PRODUCTS DWS2069 and WELLS 1S15566.

This table covers the relays that control the Engine Control Module circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

This group shows a single part: DENSO 5670003.

This table covers the relays that control the Fog / Driving Lamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2021 Honda Civic — DENSO 5670003.

This table covers the relays that control the Fuel Pump / Circuit Opening circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Fuel Pump / Circuit Opening Relay parts are listed for the 2021 Honda Civic, from ROSTRA and WELLS. All of them fit every engine offered in the 2021 Civic.

This group includes ROSTRA 600069 and WELLS 1R1631.

This table covers the relays that control the Headlamp circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2021 Honda Civic — DENSO 5670003.

This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: STANDARD MOTOR PRODUCTS CBS2177.

This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: WELLS 1S12062.

This table covers the Neutral Safety Switch / Range sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

4 Neutral Safety Switch / Range Sensor parts are listed for the 2021 Honda Civic, from VEMO and BECK/ARNLEY.

Economy: 1 part, from VEMO. A representative part number is VEMO V26730066.

The Standard Replacement section: 1 option from BECK/ARNLEY. BECK/ARNLEY 2012761 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

This group includes VEMO V26730066, BECK/ARNLEY 2012761 and BECK/ARNLEY 2012758 and the remaining parts above.

This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch. Read more

9 Oil Pressure Sender / Switch parts are listed for the 2021 Honda Civic, from WALKER PRODUCTS, BECK/ARNLEY, HOLSTEIN and 4 other brands. BECK/ARNLEY 2011649 carries the "Popular" badge. 3 parts fit every engine; the other 6 are engine-specific.

Economy: 3 parts, from WALKER PRODUCTS and HOLSTEIN. A representative part number is HOLSTEIN 2OPS0029.

The Standard Replacement section: 6 options from BECK/ARNLEY, HELLA, ROSTRA and 2 other brands. BECK/ARNLEY 2011649 is listed in this group.

This group includes BECK/ARNLEY 2011649, HOLSTEIN 2OPS0029 and WALKER PRODUCTS 2561049 and the remaining parts above.

This table covers the Outside Mirror switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

This group shows a single part: VEMO V26730070.

This table covers the relays that control the Power Steering circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

One part is listed for the 2021 Honda Civic — DENSO 5670003.

This table covers the switches that command each window motor. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

7 Power Window Switch parts are listed for the 2021 Honda Civic, from WELLS, DORMAN and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS DWS2069 carries the "Popular" badge. 5 parts fit every engine; the other 2 are engine-specific.

Economy: 2 parts, from DORMAN. A representative part number is DORMAN 920238.

The Standard Replacement section: 5 options from WELLS and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS DWS2069 is listed in this group.

Listed part numbers: STANDARD MOTOR PRODUCTS DWS2069, DORMAN 920238 and DORMAN 920237, plus the other parts above.

This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

2 Radiator Fan Relay parts for the 2021 Honda Civic come from 2 brands — DENSO and STANDARD MOTOR PRODUCTS. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: DENSO 5670003 and STANDARD MOTOR PRODUCTS RY1878.

This table covers the relays that control the Starter Motor Control circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

This group shows a single part: DENSO 5670003.

This table covers the relays that control the Turn Signal circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is. Read more

This group shows a single part: DENSO 5670003.

This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

One part is listed for the 2021 Honda Civic — STANDARD MOTOR PRODUCTS CBS2177.

This table covers the Variable Valve Timing (VVT) Oil Pressure switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too. Read more

3 Variable Valve Timing (VVT) Oil Pressure Switch parts for the 2021 Honda Civic come from 2 brands — WELLS and AUTOTECNICA.

The Economy section: 1 option from AUTOTECNICA. AUTOTECNICA HA1319047 is listed in this group.

Standard Replacement: 1 part, from WELLS. A representative part number is WELLS 1S12034.

1 further part sits outside the graded sections, with the same engine-level match.

Listed part numbers: AUTOTECNICA HA1319047 and WELLS 1S12034, plus the other parts above.