Replace the output speed sensor on the CVT transmission to restore proper speedometer operation and transmission shift control.

Warnings

Tools required

Parts

• Output speed sensor × 1 — 28820-5CK-013 or equivalent OEM
• O-ring for speed sensor × 1 — Usually included with sensor

Fluids

• Honda DW-1 ATF — 0.5 qt

Preparation

1. Park vehicle on level ground and apply parking brake
2. Allow transmission to cool for at least 30 minutes if recently driven
3. Raise and support front of vehicle on jack stands if needed for access (some technicians can reach from wheel well)
4. Remove right front wheel for better access to transmission sensor location
5. Remove right front inner fender liner clips and peel back liner to expose transmission case

Procedure

1. 1

   Locate the output speed sensor
   The output speed sensor is mounted on the transmission case below and forward of the right axle shaft. It has a single electrical connector and is held by one 10mm bolt. Clean the area around the sensor with a shop towel to prevent dirt from entering the transmission.
2. 2

   Disconnect the electrical connector
   Press the tab on the electrical connector and pull it straight off the output speed sensor. If the connector is difficult to remove, gently pry the locking tab with a small flathead screwdriver while pulling the connector.
3. 3

   Position drain pan
   Place a small drain pan directly beneath the output speed sensor. Approximately 2-4 ounces of ATF will drain when the sensor is removed.
4. 4

   Remove sensor mounting bolt
   Using a 10mm socket, remove the single bolt securing the output speed sensor to the transmission case. Keep the bolt clean for reinstallation.
5. 5

   Extract the old sensor
   Carefully pull the output speed sensor straight out of the transmission case. ATF will drain from the sensor bore. Allow fluid to drain completely into the pan. Remove and discard the old O-ring from the sensor or from the transmission case bore.
6. 6

   Prepare new sensor
   Install the new O-ring onto the new output speed sensor. Lightly lubricate the O-ring with clean Honda DW-1 ATF to ease installation and prevent damage to the seal.
7. 7

   Install new sensor
   Carefully insert the new output speed sensor into the transmission case bore, ensuring the O-ring does not roll or pinch. Push the sensor fully into position until it seats against the transmission case.
8. 8

   Secure sensor with mounting bolt
   Install the 10mm mounting bolt and tighten to specification using a torque wrench. Ensure the sensor is fully seated before tightening.
   Torque spec

   Sensor Bolts10 Nm (8 lb-ft)
9. 9

   Reconnect electrical connector
   Push the electrical connector onto the output speed sensor until it clicks into place. Gently tug on the connector to verify it is securely locked.
10. 10

    Check and top off transmission fluid
    Check the transmission fluid level through the dipstick (if equipped) or fill plug. Add Honda DW-1 ATF as needed to replace fluid lost during sensor removal. Typical loss is 0.25-0.5 quarts. On CVT models without dipstick, fluid level must be checked with engine running at operating temperature.

Reassembly

1. Reinstall right front inner fender liner and secure all clips
2. Reinstall right front wheel and torque lug nuts to specification (80 lb-ft)
3. Lower vehicle to ground

Verification

• Start engine and verify no transmission fluid leaks around the output speed sensor
• Test drive vehicle and confirm speedometer operates correctly
• Verify no transmission-related warning lights or codes appear on instrument cluster
• Recheck transmission fluid level after test drive and top off if necessary
• Use a scan tool to verify the output speed sensor is providing signal to the ECM/PCM

More procedures for this vehicle