One or more tire pressure sensors have a weak battery
What it means
B106B. One or more tire pressure sensors have a weak battery. The tire pressure warning flashes then stays on and the message center shows a sensor fault.
Findings, check these first
- Weak tire pressure sensor battery
- Aging tire pressure sensor
- Damaged tire pressure sensor
- Sensor communication fault
- Faulty smart junction box
Standard procedure
- Confirm the code and check each tire pressure sensor reading
- Identify which sensor has the weak battery
- Replace the affected tire pressure sensor
- Train the new sensor with the proper procedure
- Retest the tire pressure monitor after service
Code lookup
Type a code above, or start from a symptom or a common code.
Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.
Sources and review
Review: checked against the recorded source material.
- B106B FORD: Code Meaning, Causes, Symptoms, & Tech Notes | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: code identity, Ford meaning and possible causes
Fetched directly. Ford title, meaning and causes match the catalog record. Model and year fitment remain curator claims.
- B106B FORD Tire Pressure Sensor Low Battery | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Ford meaning and causes
Same Ford text as the engine-codes page (both sites share one publisher).
Last updated 2026-09-26.
Report a correction for B106B. Include your vehicle, the issue and a source if you have one.