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P0120

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P0120 OBD-II Trouble Code: TPS "A" Circuit Malfunction
P0120 P0120 code definition Throttle Pedal Position Sensor/Switch (TPS) "A" Circuit Malfunction What the P0120 code means P0120 is the generic OBD-II code which indicates that the Engine Control Module (ECM) has seen the TPS sensor circuit A output voltage...

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Fault code p0120
Diagnostic trouble code P0120 (https://www.yourmechanic.com/article/p0120-obd-ii-trouble-code-tps-a-circuit-malfunction-by-jay-safford) sets when the ECM (or PCM) receives an output from TPS sensor circuit A that is outside of the specified voltage range in relation to TPS sensor circuit B. The code will also set if...
What are these codes that appeared on my car?
These codes are related to the engine sensors for mass air flow (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), idle air control, and the throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement). It is quite likely, given your mileage, that their sensors have become dirty/clogged, or the sensors have failed....

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