C1933 Lexus 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 Lexus 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.
Code C1933 Lexus Description
What are the Possible Causes of the DTC C1933 Lexus?
- 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 Lexus?
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 Lexus 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.
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Frequently Asked Questions about C1933 Lexus Code
What does the OBDII code C1933 mean in a Lexus?
The code C1933 indicates a short in the Front Control Board Temperature Sensor Circuit, which monitors temperature to ensure proper system operation.
What are the common symptoms of code C1933 in a Lexus?
Symptoms may include erratic operation of climate control, inaccurate temperature readings, or failure of certain HVAC functions.
What causes the C1933 code to appear in a Lexus?
A short circuit in the wiring, a faulty temperature sensor, or damage to the front control board are common causes of this code.
How can I diagnose the C1933 code in my Lexus?
Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for continuity or shorts in the sensor circuit.
Can I still drive my Lexus with the C1933 code?
Yes, but the malfunction may affect climate control performance, which could be inconvenient in extreme weather conditions.
How do I fix the C1933 code on my Lexus?
Repair or replace damaged wiring, connectors, or the temperature sensor. If the front control board is faulty, it may need replacement.
How much does it cost to fix the C1933 code in a Lexus?
Costs vary depending on the exact issue, but repairing wiring or replacing the temperature sensor is generally less expensive than replacing the control board, which can cost several hundred dollars.
Can clearing the code solve the C1933 issue?
Clearing the code may temporarily remove it, but the underlying problem must be resolved to prevent it from reappearing.
Is the C1933 code specific to Lexus vehicles?
The code C1933 is most commonly associated with Lexus vehicles but may also appear in other brands that share similar systems.
Do I need a professional mechanic to fix the C1933 code?
If you're comfortable with electrical diagnostics and repairs, you can attempt to fix it yourself. Otherwise, consult a qualified mechanic for assistance.
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