The 2022 Audi Q5 is powered by a 2.0-liter turbocharged 4-cylinder engine (EA888) producing 201-261 horsepower depending on configuration. When a P0305 diagnostic trouble code appears indicating a cylinder 5 misfire, this represents an anomalous diagnostic situation requiring specialized investigation.
Understanding the P0305 Anomaly
The P0305 code translates to "Cylinder 5 Misfire Detected" in standard OBD-II terminology. However, the Q5's turbocharged 4-cylinder contains only cylinders numbered 1 through 4. The appearance of this code indicates a diagnostic system irregularity.
Q5 vs SQ5 Clarification
The standard Q5 uses a 4-cylinder engine where P0305 is anomalous. The SQ5 uses a 3.0-liter V6 where cylinder 5 is legitimate. Verify your specific model before proceeding with diagnosis.
Diagnostic Protocol
When encountering P0305 on your 4-cylinder Q5, a qualified technician should use VAG-COM or Audi dealer diagnostics to verify actual misfire counter data for cylinders 1-4. Software updates and communication errors should be investigated.
Possible Causes
This anomalous code may result from ECU software requiring updates, control module communication errors, or aftermarket device interference.