HO2S Transition Time Ratio Bank 2 Sensor 1
Table of contents
P1154 PONTIAC Possible Causes
- Faulty Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
- Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 harness is open or shorted
- Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 circuit poor electrical connection
How do I fix code P1154 PONTIAC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1154 PONTIAC code
The cost of diagnosing the P1154 PONTIAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The P1154 code sets if the HO2S ratio is not within range.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1154 PONTIAC Description
The Powertrain Control Module (PCM) continuously monitors the Heated Oxygen Sensor (HO2S) activity for 100 seconds. During the monitor period the PCM counts the number of times that the HO2S responds from rich to lean and from lean to rich and adds the amount of time it took to complete all transitions. With this information, an average time for all transitions can be determined. The PCM then pides the rich to lean average by the lean to rich average to obtain a ratio.