B15C6 Code - Ignition Switch Signal Malfunction
Quick Answer
If vehicle movement (10 km/h (6 mph) or more for 10 seconds) is detected based on the location data sent from the Radio Receiver Assembly even when the Data Communication Module (DCM) (Telematics transceiver) detects that the ignition switch is off, this Diagnostic Trouble Code (DTC) will be stored. Common causes include Faulty Data Communication Module (DCM) (Telematics transceiver), DCM (Telematics transceiver) harness is open or shorted, DCM (Telematics transceiver) 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
- B15C6 indicates Ignition Switch Signal Malfunction.
- Common causes
- Common causes include Faulty Data Communication Module (DCM) (Telematics transceiver), DCM (Telematics transceiver) harness is open or shorted, DCM (Telematics transceiver) 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 B15C6 Description
What are the Possible Causes of the DTC B15C6?
- Faulty Data Communication Module (DCM) (Telematics transceiver)
- DCM (Telematics transceiver) harness is open or shorted
- DCM (Telematics transceiver) circuit poor electrical connection
How to Fix the DTC B15C6?
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 B15C6 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 B15C6 code?
Need more information on how to fix the B15C6 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B15C6 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B15C6 Lexus — Ignition Switch Signal Malfunction
- B15C6 Toyota — Ignition Switch Signal Malfunction
Frequently Asked Questions about B15C6 Code
What does the OBDII code B15C6 mean?
The OBDII code B15C6 indicates an "Ignition Switch Signal Malfunction," which means the vehicle's onboard computer is not receiving the correct signal from the ignition switch.
What are the common symptoms of a B15C6 code?
Common symptoms may include difficulty starting the vehicle, electrical components not functioning properly, or the engine stalling unexpectedly.
What can cause the B15C6 code to trigger?
Possible causes include a faulty ignition switch, damaged wiring or connectors related to the ignition system, or issues within the vehicle's body control module.
How can I diagnose a B15C6 code?
To diagnose the B15C6 code, start by using an OBDII scanner to confirm the code. Then, visually inspect the ignition switch and associated wiring for damage. Testing the ignition switch for proper operation is also recommended.
What are some common repairs for a B15C6 code?
Common repairs include replacing a faulty ignition switch, repairing or replacing damaged wiring or connectors, and updating or reprogramming the vehicle's body control module if necessary.
Can a dead battery cause a B15C6 code?
Yes, a dead or weak battery can cause voltage issues that may trigger the B15C6 code, as the ignition switch relies on proper voltage to function correctly.
Is it safe to drive with a B15C6 code?
While it may be possible to drive the vehicle, it's not advisable since the ignition signal malfunction can lead to unexpected engine stalls or electrical failures, posing safety risks.
How can I prevent the B15C6 code from occurring?
Regular maintenance of your vehicle's electrical system, including checking the ignition switch and ensuring clean and secure connections, can help prevent the occurrence of the B15C6 code.
Should I clear the B15C6 code after repairs?
Yes, after completing repairs, you should clear the code using an OBDII scanner and then monitor the vehicle to ensure the issue does not return.
Discuss the causes and fixes for B15C6 OBDII Code
Code B15C6 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
