AutoCodes – Generic – C1628

C1628 Code - Vehicle Height Sensor Failure

Quick Answer

The Rear Height Control Sensor Sub-Assembly RH is connected to the Parking Assist ECU. Common causes include Faulty Rear Height Control Sensor Sub-Assembly RH, Rear Height Control Sensor Sub-Assembly RH harness is open or shorted, Rear Height Control Sensor Sub-Assembly RH circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1628 indicates Vehicle Height Sensor Failure.
Common causes: Common causes include Faulty Rear Height Control Sensor Sub-Assembly RH, Rear Height Control Sensor Sub-Assembly RH harness is open or shorted, Rear Height Control Sensor Sub-Assembly RH circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 6,469

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1628 Description

The Rear Height Control Sensor Sub-Assembly RH is connected to the Parking Assist ECU. This Diagnostic Trouble Code (DTC) is stored when the parking assist ECU judges that vehicle height sensor signal received from the rear height control sensor sub-assembly RH is abnormal or has not changed (rear height control sensor sub-assembly RH seized).

OBDII Code C1628 - Vehicle Height Sensor Failure - AutoCodes.com — C1628 Code - Vehicle Height Sensor Failure

What does this mean?

What are the Possible Causes of the DTC C1628?

Faulty Rear Height Control Sensor Sub-Assembly RH
Rear Height Control Sensor Sub-Assembly RH harness is open or shorted
Rear Height Control Sensor Sub-Assembly RH circuit poor electrical connection
Faulty Parking Assist ECU

How to Fix the DTC C1628?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1628 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1628 code?

Need more information on how to fix the C1628 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1628 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1628 Lexus — Vehicle Height Sensor Failure
C1628 Toyota — Vehicle Height Sensor Failure

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1628 Code

1. What are the common symptoms of OBDII code C1628 (Vehicle Height Sensor Failure)?

- Common symptoms include inaccurate ride height measurements, suspension issues, and warning lights illuminated on the dashboard.

2. What can cause the OBDII code C1628 to trigger for Vehicle Height Sensor Failure?

- The code can be triggered by a faulty height sensor, damaged wiring, or issues with the suspension control module.

3. How can I diagnose the Vehicle Height Sensor Failure related to OBDII code C1628?

- Diagnosis typically involves checking the height sensor's wiring, connections, and functionality using a diagnostic scanner.

4. Can I continue driving my vehicle with the OBDII code C1628 indicating Vehicle Height Sensor Failure?

- It is not recommended to drive the vehicle with this code present, as it can affect the suspension system's performance and safety.

5. How can I repair the Vehicle Height Sensor Failure related to OBDII code C1628?

- Repair options may include replacing the faulty height sensor, repairing damaged wiring, or resetting the suspension control module.

6. Is it possible to reset the OBDII code C1628 for Vehicle Height Sensor Failure without fixing the issue?

- Resetting the code without addressing the underlying problem may temporarily turn off the warning light but will not solve the root cause.

7. Are there any DIY tips for troubleshooting OBDII code C1628 for Vehicle Height Sensor Failure?

- DIY tips may include visually inspecting the height sensor and its connections, checking for any visible damage or loose wiring.

8. How much does it cost to repair the Vehicle Height Sensor Failure related to OBDII code C1628 at a professional auto repair shop?

- The cost of repair can vary depending on the extent of the issue and the specific components that need to be replaced, but it may range from $100 to $500.

9. Can extreme weather conditions affect the triggering of OBDII code C1628 for Vehicle Height Sensor Failure?

- Yes, extreme weather conditions like heavy rain or extreme cold can potentially damage the height sensor or its connections, leading to the code trigger.

10. Is it necessary to visit a dealership for repairing the Vehicle Height Sensor Failure related to OBDII code C1628?

- While a dealership may have specialized knowledge, an experienced independent mechanic can also effectively diagnose and repair the issue at a lower cost.