P0158
O2 Sensor Circuit High Voltage Bank 2 Sensor 2
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 p0158 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
High voltage from the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- May indicate catalyst failure
Common Causes
- Faulty sensor
- Catalyst failure
- Rich condition
Diagnostic Steps
- Test voltage
- Check catalyst
Repair Notes
Replace sensor or catalyst.
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
P0158 on Other Vehicles
Common Questions
What does code P0158 mean on a 2007-2007 Cadillac CTS?
P0158 stands for "O2 Sensor Circuit High Voltage Bank 2 Sensor 2". High voltage from the downstream O2 sensor on Bank 2.
What are the symptoms of P0158 on a Cadillac CTS?
Common symptoms of P0158 include: Check Engine Light, May indicate catalyst failure.
What causes P0158 on a 2007-2007 Cadillac CTS?
Common causes of P0158 include: Faulty sensor, Catalyst failure, Rich condition.
Last updated: March 2026