P1148 2002 NISSAN ALTIMA SEDAN Possible Causes
- Faulty Heated Oxygen Sensor 1, Bank 1
- Open or Short Circuit in Heated Oxygen Sensor 1, Bank 1 Circuit
- Electrical Connection of Heated Oxygen Sensor 1, Bank 1 Circuit
How to Fix Code P1148 2002 NISSAN ALTIMA SEDAN?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The closed-loop control function for Bank 1 does not operate even when the vehicle is running under specified conditions; the closed-loop control function for Bank 2 does not operate even when the vehicle is running under specified conditions.
Possible Symptoms
- Check Engine Light On (or Service Engine Soon Warning Light)
P1148 2002 NISSAN ALTIMA SEDAN Meaning
The Engine Control Module (ECM) performs an ON/OFF operation control of the heater for Heated Oxygen Sensor 1 according to the engine operating condition to maintain the temperature of the Heated Oxygen Sensor 1 element within the specified range.