This procedure replaces the steering angle sensor located in the steering column assembly on a 2016-2021 Honda Civic with the 1.5L turbo engine.

Warnings

Tools required

Parts

• Steering angle sensor × 1 — Honda OEM 35700-TBA-A01 or equivalent
• Steering column cover screws (if damaged) × 4 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake
2. Turn steering wheel to center position with front wheels pointing straight ahead
3. Turn ignition off and remove key
4. Disconnect negative battery terminal and wait 3 minutes for airbag system to discharge
5. Adjust steering column to lowest and most extended position for access

Procedure

1. 1

   Remove lower steering column covers
   Use trim removal tool to carefully pry out the sides of the lower steering column cover. Remove the two Phillips screws at the bottom of the lower cover. Pull the lower cover away from the column and disconnect any electrical connectors if present (such as for tilt/telescoping switch).
2. 2

   Remove upper steering column cover
   Locate and remove the two screws securing the upper steering column cover (one on each side). Carefully lift the upper cover away from the column, being mindful of any clips along the rear edge. Set covers aside in a clean area.
   Torque spec

   Cover Screws10 Nm (8 lb-ft)
3. 3

   Locate steering angle sensor
   Identify the steering angle sensor mounted on the steering column beneath the covers. It is a round or rectangular module with an electrical connector, typically located just below the column lock mechanism. Note the orientation and routing of the wiring harness.
4. 4

   Disconnect sensor electrical connector
   Press the locking tab on the steering angle sensor electrical connector and carefully pull the connector straight out. Do not pull on the wires themselves. If connector is difficult to access, use a flathead screwdriver to gently press the locking tab while pulling.
5. 5

   Remove sensor mounting bolts
   Using a 10mm socket or T30 Torx bit (depending on model year variation), remove the mounting bolts securing the steering angle sensor to the steering column. There are typically 2-3 bolts. Support the sensor as you remove the final bolt to prevent it from falling.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
6. 6

   Remove steering angle sensor
   Carefully slide the steering angle sensor off the steering shaft. The sensor may have internal gearing or optical sensors that fit around the shaft. Note the orientation and any alignment marks for proper installation of the new sensor.
   ⚠Do not rotate the internal components of the old sensor while removing it, as debris or broken parts could fall into the steering column.
7. 7

   Prepare new sensor
   Remove the new steering angle sensor from its packaging. Verify it matches the old sensor. If the new sensor has a shipping lock or pin to hold internal components in place, do NOT remove it yet. Clean the steering shaft area with electrical contact cleaner or a wire brush if any debris is present.
8. 8

   Install new steering angle sensor
   Align the new steering angle sensor with the steering shaft, ensuring any alignment marks or keyways match properly. Slide the sensor onto the shaft until it seats fully against the column mounting surface. If the sensor has a shipping lock, remove it now according to manufacturer instructions.
9. 9

   Install sensor mounting bolts
   Install the mounting bolts hand-tight first to ensure proper alignment. Once all bolts are started, torque them to specification in a cross pattern if multiple bolts are used. Ensure the sensor is seated flush against the column with no gaps.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
10. 10

    Reconnect electrical connector
    Plug the electrical connector into the new steering angle sensor until you hear or feel a positive click. Gently tug on the connector to verify it is locked in place. Route the wiring harness as it was originally to prevent interference with moving parts.
11. 11

    Reinstall steering column covers
    Position the upper steering column cover and secure with the two screws on each side, torquing to specification. Install the lower cover by reconnecting any electrical connectors first, then aligning the clips and securing the bottom screws. Verify all clips are fully engaged and covers fit properly without gaps.
    Torque spec

    Cover Screws10 Nm (8 lb-ft)
12. 12

    Reconnect battery and perform calibration
    Reconnect the negative battery terminal. Turn the ignition to ON position (do not start engine). Connect a Honda HDS scan tool or compatible diagnostic tool. Navigate to the VSA system menu and select 'Steering Angle Sensor Calibration' or 'Neutral Position Learning'. Follow the on-screen prompts to complete calibration with wheels straight ahead.
    ⚠️Sensor calibration is mandatory. Driving without proper calibration will cause VSA, traction control, and stability control systems to malfunction, potentially creating unsafe driving conditions.

Reassembly

1. Verify all steering column covers are properly secured with no rattles or loose clips
2. Return steering column adjustment to driver's preferred position
3. Clear any diagnostic trouble codes that may have been set during the procedure

Verification

• Turn ignition to ON and verify no VSA, ABS, or steering system warning lights remain illuminated after calibration
• Start engine and verify electric power steering functions normally with no unusual noises
• Turn steering wheel lock-to-lock while stationary to verify sensor is reading properly (monitor with scan tool if available)
• Test drive vehicle at low speed in a safe area to confirm stability control and VSA systems function normally
• Verify steering wheel returns to center properly after turns

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