B1797 Lexus Code - Calibration Malfunction
Quick Answer
The Diagnostic Trouble Code (DTC) B1797 is output when the following condition is met: Zero point calibration is performed when the conditions for the calibration are not satisfied or Zero point calibration has failed. Common causes include Occupant Classification system zero point calibration, Faulty Occupant Classification Sensor (front seat cushion assembly), Occupant Classification Sensor harness is open or shorted. 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
- B1797 Lexus indicates Calibration Malfunction.
- Common causes
- Common causes include Occupant Classification system zero point calibration, Faulty Occupant Classification Sensor (front seat cushion assembly), Occupant Classification Sensor harness is open or shorted.
- 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 B1797 Lexus Description
What are the Possible Causes of the DTC B1797 Lexus?
- Occupant Classification system zero point calibration
- Faulty Occupant Classification Sensor (front seat cushion assembly)
- Occupant Classification Sensor harness is open or shorted
- Occupant Classification Sensor circuit poor electrical connection
How to Fix the DTC B1797 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 B1797 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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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B1797 Lexus Code
1. What are the common symptoms of OBDII code B1797 in a Lexus related to Calibration Malfunction?
- Common symptoms include issues with the power windows, power seats, and other electronic components not functioning properly.
2. What are the possible causes of the Calibration Malfunction (B1797) OBDII code in a Lexus?
- The code B1797 can be triggered by a faulty power window motor, a malfunctioning power seat control module, or damaged wiring.
3. How can I diagnose the Calibration Malfunction (B1797) code in my Lexus?
- To diagnose the issue, you can use an OBDII scanner to read the error code, inspect the power window and seat components for any visible damage, and perform electrical tests to identify the source of the problem.
4. Can I repair the Calibration Malfunction (B1797) code in my Lexus myself?
- Depending on your skill level and experience with automotive repairs, you may be able to repair the issue yourself by replacing the faulty power window motor, power seat control module, or repairing damaged wiring.
5. Is it safe to continue driving my Lexus with the Calibration Malfunction (B1797) code?
- It is not recommended to continue driving your Lexus with the B1797 code as the affected electronic components may fail, compromising safety and convenience while driving.
6. How much does it typically cost to repair the Calibration Malfunction (B1797) code in a Lexus?
- The cost of repairing the B1797 code can vary depending on the specific issue causing the malfunction. It is recommended to consult with a professional mechanic for an accurate diagnosis and cost estimate.
7. Can a Lexus dealership fix the Calibration Malfunction (B1797) code?
- Yes, a Lexus dealership or authorized service center can diagnose and repair the Calibration Malfunction (B1797) code using specialized tools and genuine parts to ensure proper functionality.
8. Will resetting the OBDII code B1797 fix the Calibration Malfunction issue in my Lexus?
- Resetting the code may temporarily clear the error message, but it will not fix the underlying issue causing the Calibration Malfunction. It is important to address the root cause of the problem for a lasting repair.
9. Are there any preventive measures to avoid encountering the Calibration Malfunction (B1797) code in my Lexus?
- Regular maintenance, such as checking and lubricating power window components, inspecting wiring for damage, and avoiding overloading power seats, can help prevent issues that may trigger the B1797 code.
10. How long does it typically take to repair the Calibration Malfunction (B1797) code in a Lexus?
- The repair time for the B1797 code can vary depending on the specific cause of the Calibration Malfunction. Simple repairs like replacing a power window motor may take a few hours, while more complex issues could require additional time for diagnosis and repair.
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