Heated Seat Circuit Passenger Malfunction
What does B1116 mean?
The B1116 code means the vehicle's onboard diagnostic system has detected: Heated Seat Circuit Passenger Malfunction. This is a low severity code.
Common Symptoms
- Passenger heated seat does not warm up
- Heated seat indicator for passenger side not lighting
- Passenger heated seat shuts off unexpectedly
- Uneven heating on passenger seat
- Burning odor from passenger seat
Probable Causes (Ranked by Likelihood)
- Failed passenger seat heating element Very High
- Faulty passenger heated seat switch High
- Wiring damage under passenger seat Moderate
- Heated seat control module failure Low
Step-by-Step Diagnostic Procedure
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Check heated seat fuse for passenger circuit
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Test passenger heated seat switch
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Measure heating element resistance at seat connector
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Check for voltage at passenger heater element
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Inspect wiring under passenger seat for chafing or damage
Frequently Asked Questions
Are heated seat elements repairable?
Some specialty repair kits exist to patch a broken heating element wire, but most technicians recommend replacing the entire seat heater pad for a reliable and long-lasting repair.
Can items stored under the seat damage the heating system?
Yes. Objects pushed under the seat can pinch or cut wiring to the heating elements. Keep the area under seats clear to prevent wiring damage.
Why does only part of the seat heat up?
Most heated seats have separate elements for the cushion and backrest. If only one area heats, the other element has likely failed while the working element continues to function.