What does code P1121 mean on Isuzu vehicles?
The ECU detects intermittently high voltage in the throttle position sensor circuit.
OBD-II Code Isuzu
P1121 — Isuzu — Throttle Position Sensor Circuit Intermittent Voltage High
The ECU detects intermittently high voltage in the throttle position sensor circuit.
Common symptoms
- Erratic acceleration
Possible causes
- Faulty TPS sensor
- intermittent wiring fault
Initial recommendation
Inspect throttle position sensor operation and wiring integrity.
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 Isuzu code P1121 with your vehicle's actual symptoms for more complete diagnostic guidance.
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