AutoCodes – Generic – C190A

C190A Code - Open In Rear Control Board Temperature Sensor Circuit

Quick Answer

The Rear Active Stabilizer Control ECU consists of a metal board, control board, power source IC, step-up circuit, Electrically Erasable Programmable Read-Only Memory (EEPROM), and other parts. Common causes include Faulty Rear Active Stabilizer Control ECU, Rear Active Stabilizer Control ECU harness is open or shorted, Rear Active Stabilizer Control ECU 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: C190A indicates Open In Rear Control Board Temperature Sensor Circuit.
Common causes: Common causes include Faulty Rear Active Stabilizer Control ECU, Rear Active Stabilizer Control ECU harness is open or shorted, Rear Active Stabilizer Control ECU 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 867

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 Dec 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C190A Description

OBDII Code C190A - Open In Rear Control Board Temperature Sensor Circuit - AutoCodes.com — C190A Code - Open In Rear Control Board Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C190A?

Faulty Rear Active Stabilizer Control ECU
Rear Active Stabilizer Control ECU harness is open or shorted
Rear Active Stabilizer Control ECU circuit poor electrical connection

How to Fix the DTC C190A?

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 C190A 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 C190A code?

Need more information on how to fix the C190A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C190A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C190A Lexus — Open In Rear Control Board Temperature Sensor Circuit
C190A Toyota — Open In Rear Control Board Temperature Sensor Circuit

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 C190A Code

1. What are the common symptoms of OBDII code C190A?

- The common symptoms include erratic temperature readings on the rear control board, issues with climate control system operation, and potential warning lights on the dashboard.

2. What typically causes the OBDII code C190A to appear?

- The code C190A is triggered when there is an open circuit detected in the rear control board temperature sensor circuit, often due to a faulty sensor or damaged wiring.

3. How can I diagnose the issue related to code C190A?

- To diagnose the problem, you can use a diagnostic scan tool to read the code and pinpoint the exact location of the open circuit in the rear control board temperature sensor circuit.

4. Is it safe to continue driving with OBDII code C190A present?

- It is not recommended to continue driving with the code C190A active, as it can lead to inaccurate temperature readings and potential issues with the climate control system.

5. What are some repair tips for fixing OBDII code C190A?

- Repairing code C190A often involves inspecting the rear control board temperature sensor, checking the wiring for any damage, and replacing any faulty components as needed.

6. Can a DIY enthusiast fix OBDII code C190A at home?

- While some basic troubleshooting steps can be done at home, resolving OBDII code C190A may require specialized tools and expertise, making it a job best left to professionals.

7. How much does it typically cost to repair OBDII code C190A?

- The cost of repairing code C190A can vary depending on the extent of the issue, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to get a few quotes before proceeding with the repair.

8. Are there any preventive measures to avoid OBDII code C190A in the future?

- Regular maintenance checks on the climate control system, including inspecting sensors and wiring, can help prevent issues like code C190A from occurring in the future.

9. Can OBDII code C190A be intermittent in nature?

- Yes, the open circuit in the rear control board temperature sensor circuit that triggers code C190A can sometimes be intermittent, causing the symptoms to come and go sporadically.

10. How long does it typically take to repair OBDII code C190A?

- The repair time for code C190A can vary depending on the complexity of the issue, availability of parts, and the workload of the repair shop. In general, it may take a few hours to a full day to complete the repair.