Audi Q7 2023 1.4 TFSI petrol OBD Codes
On a 2023 Audi Q7 1.4 TFSI petrol, OBD fault codes often relate to ignition performance, fuel trim balance, intake leaks, catalytic converter efficiency and sensor readings that affect petrol combustion.
These pages separate petrol, diesel, hybrid and EV-style diagnostic search intent so the content does not look identical across every variant.
P0340
Camshaft Position Sensor Circuit Malfunction
P0341
Camshaft Position Sensor Circuit Range / Performance
P0420
Catalyst System Efficiency Below Threshold (Bank 1)
P0430
Catalyst System Efficiency Below Threshold (Bank 2)
P0442
Evaporative Emission Control System leak Detected (small leak)
P0455
System Gross Leak Evaporative Emission
P0456
Evaporative Emissions System Small Leak Detected
P0446
Evaporative Emission Control System Vent Control Circuit Malfunction
P0401
Exhaust Gas Recirculation Flow Insufficient Detected
P0403
Exhaust Gas Recirculation Circuit Malfunction
P0115
Engine Coolant Temperature Circuit Malfunction
P0116
Engine Coolant Temperature Circuit Range / Performance Problem
Common problem themes for this powertrain
- • ignition and spark-related misfire issues
- • air leaks and fuel trim imbalance
- • oxygen sensor and catalyst efficiency faults
- • throttle, intake and airflow-related warnings