Code P0122: full explanation, causes, and solutions
DTC P0122 means “Throttle Position Sensor A Circuit Low Input.” The ECM records this when the TPS voltage drops below 0.17–0.2 V instead of the expected 0.5–4.5 V. This can…
Code P0102: diagnosis, causes, and solutions
The information is general and does not replace professional consultation. Code P0102 indicates a low signal level from the mass air flow sensor (MAF). This page provides a quick action…
Code P0101: meaning, causes, diagnosis, and solutions
Code P0101 is a signal from the powertrain control module (PCM) indicating that the readings from the mass air flow (MAF) sensor are outside the expected range. In simple terms,…
Code P0100: meaning, causes, and how to fix it yourself
This guide covers common P0100 causes and checks. Exact test values and repair steps depend on the vehicle, engine, and service information. Code P0100 is a diagnostic trouble code (DTC)…
Code P0171: meaning, causes, and how to fix
Code P0171 is a message from the engine control module (ECM) indicating that the air-fuel mixture in the first cylinder bank (Bank 1) is too lean. The engine receives more…
Code P0141: meaning, causes, and how to fix it
P0141 – oxygen sensor heater circuit malfunction Bank 1 Sensor 2 (post-catalyst). Four main causes: faulty sensor heater, damaged wiring or connector, blown fuse, and less commonly, PCM/ECM failure. Basic…