AutoCodeFix
🔍
💭
OBD2 Category

Exhaust Codes

Total Codes
2
Critical
0
Moderate
2
Minor
0
DIY Friendly
0
Categories:All🔧 Engine⚙️ Transmission⛽ Fuel System💨 Emissions🔑 Ignition🛑 ABS / Brakes💺💥 Airbag / SRS❄️ HVAC⚡ Electrical📡 Network / CAN📡 Sensors💭 Exhaust🚗 Suspension
2 Exhaust Codes
Sorted by severity
● Critical (0)● Moderate (2)● Minor (0)
P0421Moderate
Warm Up Catalyst Efficiency Below Threshold Bank 1
The ECM has detected that the Bank 1 catalytic converter is not reducing exhaust emissions as efficiently as expected, based on comparing the pre-catalyst and post-catalyst oxygen sensor readings.
⚠️ Pro · $500–$2000View details →
P0431Moderate
Warm Up Catalyst Efficiency Below Threshold Bank 2
The ECM has detected that the Bank 2 catalytic converter is not reducing exhaust emissions as efficiently as expected, based on comparing the pre-catalyst and post-catalyst oxygen sensor readings.
⚠️ Pro · $500–$2000View details →