What What the P2178 code means? P2178 is an OBD-II generic code for the engine control module (ECM) detecting the fuel control has reached it specification limits for short and long fuel trim when the engine is just off idle...
Hi there. The code P115D (http://www.obd-data.com/p115d.html) is for the mass air flow sensor (MAF (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement)). It says that the sensor has an offset signal. The code P2178 (https://www.yourmechanic.com/article/p2178-obd-ii-trouble-code-system-too-rich-off-idle-bank-1-by-jay-safford) says that bank 1 is too rich. This means that the engine...
