AutoCodes – Toyota – B1797 Toyota

B1797 Toyota 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 Toyota 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.

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Code Popularity 5,340

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1797 Toyota Description

OBDII Code B1797 Toyota - Calibration Malfunction - AutoCodes.com — B1797 Toyota Code - Calibration Malfunction

What does this mean?

What are the Possible Causes of the DTC B1797 Toyota?

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 Toyota?

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 Toyota 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 B1797 Toyota code?

Need more information on how to fix the B1797 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1797 Toyota code diagnosed by a professional: Find a repair shop in your area

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.

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 B1797 Toyota Code

What does OBDII code B1797 mean for a Toyota vehicle?

OBDII code B1797 indicates a Calibration Malfunction, typically related to the airbag system and its calibration settings.

What are the common symptoms associated with the B1797 code?

Common symptoms include the airbag warning light being illuminated on the dashboard and potential issues with the airbag deployment system.

What can cause the B1797 code to trigger?

The code can be triggered by a malfunctioning airbag control module, issues with wiring or connectors, or incorrect calibration after repairs or replacements.

How can I diagnose a B1797 code?

To diagnose the code, use an OBDII scanner to confirm the code and check for any additional codes. Inspect the airbag control module, wiring, and connectors for damage or disconnections.

What repairs are commonly needed to fix the B1797 code?

Repairs may include recalibrating the airbag system, replacing the airbag control module, or repairing any damaged wiring or connectors associated with the airbag system.

Is it safe to drive a vehicle with a B1797 code?

It is not safe to drive a vehicle with a B1797 code, as the airbag system may not function properly in the event of an accident.

Can I clear the B1797 code without fixing the problem?

You can clear the code using an OBDII scanner, but it is not recommended to drive the vehicle until the underlying issue is resolved, as the airbag system may remain inoperative.

How much does it typically cost to repair a B1797 code?

Repair costs can vary widely, ranging from $100 to $1,000 or more, depending on whether it involves recalibration, wiring repairs, or replacing the airbag control module.

Should I take my Toyota to a dealership for a B1797 code?

While you can take your vehicle to a dealership, many independent mechanics are also qualified to diagnose and repair airbag system issues related to the B1797 code.