2006 Toyota Tundra
Mileage
86,708
Service Date
4/21/2026
Services Performed
- The vehicle was diagnosed for a check engine light and was found to have lean-condition fault codes P0171 and P0174. A smoke test confirmed there are no vacuum leaks, and fuel pressure tested within normal range. Live data monitoring showed the mass airflow sensor reading out of specification, which would cause both banks to run lean, so the sensor needs replacement. The truck also stored P0504, indicating a brake switch circuit fault, and testing confirmed the brake light switch is not operating correctly and requires replacement.
- Removed the mass airflow sensor and replaced with new. Cleared the diagnostic trouble codes. Scanned engine data to confirm repairs. Mass airflow sensor is operating as designed.
- Removed the stop light switch assembly and replaced with new. Cleared the diagnostic trouble codes. Brake lamps operate as designed.
James R. gave our service a 5 star review on 4/22/2026
