C1909 Lexus Code - Short In Rear Metal 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
- C1909 Lexus indicates Short In Rear Metal 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.
Code C1909 Lexus Description
What are the Possible Causes of the DTC C1909 Lexus?
- 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 C1909 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 C1909 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 C1909 Lexus Code
1. What are the common symptoms of OBDII code C1909 in a Lexus related to a short in the rear metal board temperature sensor circuit?
- Common symptoms include inaccurate temperature readings, dashboard warning lights, and potential issues with the vehicle's climate control system.
2. What are the possible causes of a short in the rear metal board temperature sensor circuit in a Lexus triggering code C1909?
- Potential causes can include damaged wiring, a faulty temperature sensor, corrosion in the circuit, or issues with the sensor connection.
3. How can I diagnose a short in the rear metal board temperature sensor circuit in my Lexus when experiencing OBDII code C1909?
- Diagnose the issue by visually inspecting the wiring, checking the sensor connection, testing the sensor's resistance, and using a multimeter to check for shorts.
4. Is it safe to continue driving my Lexus with OBDII code C1909 indicating a short in the rear metal board temperature sensor circuit?
- It is generally not recommended to drive the vehicle with this issue, as it can lead to incorrect temperature readings and potential problems with the climate control system.
5. How can I repair a short in the rear metal board temperature sensor circuit in my Lexus to resolve OBDII code C1909?
- Repair steps may involve repairing or replacing damaged wiring, replacing the faulty temperature sensor, cleaning corrosion in the circuit, and ensuring a secure sensor connection.
6. Can I reset the OBDII code C1909 related to a short in the rear metal board temperature sensor circuit in my Lexus without fixing the underlying issue?
- Resetting the code without addressing the root cause may temporarily clear the warning light, but the issue will likely reoccur until the circuit problem is resolved.
7. Are there any preventive maintenance steps I can take to avoid OBDII code C1909 due to a short in the rear metal board temperature sensor circuit in my Lexus?
- Regularly inspecting the sensor and wiring for signs of damage, ensuring proper connections, and addressing any issues promptly can help prevent this code from occurring.
8. How sensitive is the rear metal board temperature sensor circuit in a Lexus to environmental factors that may cause a short and trigger OBDII code C1909?
- The sensor circuit can be sensitive to moisture, corrosion, and physical damage, so it's essential to protect it from these environmental factors to prevent shorts.
9. Will fixing OBDII code C1909 related to a short in the rear metal board temperature sensor circuit in my Lexus require specialized tools or expertise?
- While basic diagnostic tools like a multimeter can be helpful, repairing this issue may require some knowledge of automotive electrical systems and sensor components.
10. Can a DIY enthusiast with some automotive repair experience troubleshoot and repair OBDII code C1909 associated with a short in the rear metal board temperature sensor circuit in a Lexus?
- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair this issue by following proper diagnostic procedures and using the right tools.
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