P2204
NOx Sensor Circuit Intermittent Bank 1
2007-2007 Cadillac CTS 3.2L V6
Moderate SeverityPowertrainGeneric (SAE)
The 2007 Cadillac CTS is equipped with a 3.2L V6 engine. Below you'll find detailed p2204 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Intermittent signal from the NOx sensor on bank 1.
Symptoms
- Intermittent check engine light
- Erratic SCR operation
Common Causes
- Loose connection
- Damaged wiring
- Sensor connector moisture ingress
Diagnostic Steps
- Wiggle test wiring and connector
- Check for water intrusion
- Monitor signal stability
Repair Notes
Clean and secure connector. Replace sensor or repair wiring if intermittent.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P2204 on Other Vehicles
Common Questions
What does code P2204 mean on a 2007-2007 Cadillac CTS?
P2204 stands for "NOx Sensor Circuit Intermittent Bank 1". Intermittent signal from the NOx sensor on bank 1.
What are the symptoms of P2204 on a Cadillac CTS?
Common symptoms of P2204 include: Intermittent check engine light, Erratic SCR operation.
What causes P2204 on a 2007-2007 Cadillac CTS?
Common causes of P2204 include: Loose connection, Damaged wiring, Sensor connector moisture ingress.
Last updated: March 2026