AutoCodes – Generic – C1933

C1933 Code - Short In Front Control Board Temperature Sensor Circuit

Quick Answer

The Front 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 Front Active Stabilizer Control ECU, Faulty Front Active Stabilizer Relay, Faulty Rear Active Stabilizer Relay. 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
C1933 indicates Short In Front Control Board Temperature Sensor Circuit.
Common causes
Common causes include Faulty Front Active Stabilizer Control ECU, Faulty Front Active Stabilizer Relay, Faulty Rear Active Stabilizer Relay.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 3,768
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 05, 2020
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Code C1933 Description

The Front 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. If a problem occurs in the Front Active Stabilizer Control ECU and PIG power source circuit, a Diagnostic Trouble Code (DTC) is stored.
OBDII Code C1933 - Short In Front Control Board Temperature Sensor Circuit - AutoCodes.com
C1933 Code - Short In Front Control Board Temperature Sensor Circuit

What are the Possible Causes of the DTC C1933?

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

How to Fix the DTC C1933?

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 C1933 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 C1933 code?

Need more information on how to fix the C1933 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1933 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • C1933 Lexus β€” Short In Front Control Board Temperature Sensor Circuit
  • C1933 Toyota β€” Short In Front 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 C1933 Code

1. What are the common symptoms associated with OBDII code C1933 (Short In Front Control Board Temperature Sensor Circuit)?

- Common symptoms include inaccurate temperature readings on the control board display, dashboard warning lights illuminating, and potential issues with the vehicle's heating or cooling systems.

2. What are the possible causes of OBDII code C1933?

- The code C1933 may be triggered by a short circuit in the front control board temperature sensor circuit, damaged wiring or connectors, a faulty temperature sensor, or issues with the control board itself.

3. How can I diagnose the OBDII code C1933?

- Diagnosing code C1933 involves using a diagnostic scanner to read the code, conducting a visual inspection of the wiring and connectors, testing the temperature sensor's resistance, and checking for any visible signs of damage.

4. What are the repair options for OBDII code C1933?

- Repairing code C1933 may involve repairing or replacing damaged wiring or connectors, replacing the front control board temperature sensor, or addressing any issues with the control board itself. It is recommended to follow the manufacturer's repair procedures.

5. Can I drive my vehicle with OBDII code C1933?

- It is generally not recommended to drive the vehicle with an unresolved OBDII code, as it can indicate potential issues with important systems. It is best to address the underlying problem as soon as possible.

6. How much does it typically cost to repair OBDII code C1933?

- The cost of repairing OBDII code C1933 can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to obtain quotes from reputable repair shops.

7. Will resetting the OBDII system clear the C1933 code?

- Resetting the OBDII system may temporarily clear the C1933 code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

8. Can extreme temperatures affect the occurrence of OBDII code C1933?

- Extreme temperatures can potentially affect the performance of temperature sensors and wiring, which may contribute to the triggering of code C1933. Maintaining a stable temperature environment for the vehicle can help prevent issues.

9. Is OBDII code C1933 a common issue in specific vehicle makes or models?

- The occurrence of OBDII code C1933 can vary across different vehicle makes and models. However, it is not uncommon in vehicles equipped with complex climate control systems.

10. Are there any preventive measures to avoid OBDII code C1933 in the future?

- Regular maintenance checks, including inspecting wiring and connectors, monitoring temperature sensor performance, and addressing any dashboard warning lights promptly, can help prevent the occurrence of OBDII code C1933.

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