What does code P1121 mean on Mazda vehicles?
The ECU detects that TPS and MAF signals do not correlate properly.
OBD-II Code Mazda
P1121 — Mazda — Throttle Position Sensor Signal Not Consistent with Mass Airflow Signal
The ECU detects that TPS and MAF signals do not correlate properly.
Common symptoms
- Poor throttle response
Possible causes
- Faulty TPS or MAF sensor
- wiring issue
Initial recommendation
Check TPS and MAF sensor signals and wiring.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Mazda code P1121 with your vehicle's actual symptoms for more complete diagnostic guidance.
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