HO2S Insufficient Switching Bank 2 Sensor 1
2014-2014 Cadillac SRX 3.0L V6
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed p1153 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The PCM determined that the upstream O2 sensor on Bank 2 is not switching between rich and lean often enough during closed-loop operation. This is the Bank 2 counterpart to P1133 and the two codes are frequently seen together.
Symptoms
- Check Engine Light
- Poor fuel economy
- Rough idle
- Hesitation
- Failed emissions test
Common Causes
- Faulty or lazy upstream O2 sensor Bank 2
- Exhaust leak near sensor
- Vacuum leak
- Fuel delivery issue
- MAF sensor contamination
Diagnostic Steps
- Monitor O2 sensor switching rate with scan tool
- Check for exhaust leaks
- Perform vacuum leak test
- Test fuel pressure
- Clean or test MAF sensor
Repair Notes
Replace upstream O2 sensor Bank 2. Check for exhaust leaks. Commonly appears alongside P1133.
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
P1153 on Other Vehicles
Common Questions
What does code P1153 mean on a 2014-2014 Cadillac SRX?
P1153 stands for "HO2S Insufficient Switching Bank 2 Sensor 1". The PCM determined that the upstream O2 sensor on Bank 2 is not switching between rich and lean often enough during closed-loop operation. This is the Bank 2 counterpart to P1133 and the two codes are frequently seen together.
What are the symptoms of P1153 on a Cadillac SRX?
Common symptoms of P1153 include: Check Engine Light, Poor fuel economy, Rough idle, Hesitation, Failed emissions test.
What causes P1153 on a 2014-2014 Cadillac SRX?
Common causes of P1153 include: Faulty or lazy upstream O2 sensor Bank 2, Exhaust leak near sensor, Vacuum leak, Fuel delivery issue, MAF sensor contamination.
Last updated: March 2026