P0712 Lexus Code - Transmission Fluid Temperature Sensor 'A' Low Input
Quick Answer
The Automatic Transmission Fluid (ATF) Temperature Sensor converts the fluid temperature into a resistance value for use by the Engine Control Module (ECM). Common causes include Faulty Automatic Transmission Fluid (ATF) Temperature Sensor, Automatic Transmission Fluid Temperature Sensor harness is open or shorted, Automatic Transmission Fluid Temperature Sensor 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
- P0712 Lexus indicates Transmission Fluid Temperature Sensor 'A' Low Input.
- Common causes
- Common causes include Faulty Automatic Transmission Fluid (ATF) Temperature Sensor, Automatic Transmission Fluid Temperature Sensor harness is open or shorted, Automatic Transmission Fluid Temperature Sensor 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 P0712 Lexus Description
This Diagnostic Trouble Code (DTC) indicates an open or short in the ATF temperature sensor circuit. The ATF temperature sensor converts ATF temperature into an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is below 79 Ω*1 or higher than 156 kΩ*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will turn on the MIL and store the DTC.
What are the Possible Causes of the DTC P0712 Lexus?
- Faulty Automatic Transmission Fluid (ATF) Temperature Sensor
- Automatic Transmission Fluid Temperature Sensor harness is open or shorted
- Automatic Transmission Fluid Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0712 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 P0712 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 P0712 Lexus Code
1. What does the OBDII code P0712 mean for a Lexus?
P0712 indicates the Transmission Fluid Temperature Sensor 'A' is reporting a low input signal, often caused by a malfunction in the sensor or its circuit.
2. What are the common symptoms of code P0712 on a Lexus?
Symptoms may include erratic shifting, transmission overheating, poor fuel efficiency, and the Check Engine Light turning on.
3. What causes the P0712 code on a Lexus?
Common causes include a faulty transmission fluid temperature sensor, damaged wiring or connectors, low transmission fluid levels, or issues within the transmission control module (TCM).
4. Can I drive my Lexus with code P0712?
Driving with P0712 is not recommended, as it may lead to transmission damage and reduced performance due to improper fluid temperature monitoring.
5. How do I diagnose the P0712 code on a Lexus?
Diagnosis involves checking the sensor’s electrical connections, testing the sensor’s resistance, inspecting wiring for damage, and verifying fluid levels and condition.
6. How do I fix the P0712 code on a Lexus?
Repairs may include replacing the transmission fluid temperature sensor, repairing damaged wiring, cleaning connectors, or refilling and replacing transmission fluid.
7. How much does it cost to fix the P0712 code on a Lexus?
The cost varies but typically ranges from $150 to $400, depending on the parts needed and labor rates.
8. Can low transmission fluid cause the P0712 code?
Yes, low or degraded transmission fluid can disrupt sensor readings and trigger the P0712 code.
9. Will a reset clear the P0712 code on a Lexus?
Clearing the code with an OBDII scanner may temporarily remove it, but the underlying issue must be fixed to prevent the code from returning.
10. What happens if I ignore the P0712 code on my Lexus?
Ignoring the code can lead to further transmission issues, reduced performance, and potentially costly repairs if overheating occurs.
Discuss the causes and fixes for P0712 Lexus OBDII Code
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