DTC P0172 Audi
System Too Rich (Bank 1)
System Too Rich (Bank 1)
Description
Engine speed, <800 RPM Mass air flow, <30 kg h ECT, > 48° C OR Substitute ECT, 80.3 °C IAT, <80.3° C Delta part load adaptation, Ready Lambda control, Closed loop EVAP purge valve, Closed If low fuel signal then wait until mass air integral, >5 kg Engine speed, 1120-6000 RPM Engine load, 14.3-90% Mass air flow, 48–600 kg h ECT, > 48° C OR Substitute ECT, 80.3° C IAT, <80.3° C Fuel tank level Lambda control, Closed loop EVAP purge valve, Closed If low fuel signal then wait until mass air integral, >5 kg
Cause and Solution
EVAP vapor recovery system
Fuel pressure regulator
HO2S
MAF or MAP sensor values are incorrect or out-of-range
Video Guide
Diagnostic Info
- DTC Code: P0172
- Brand: Audi