P0603 2011 NISSAN SENTRA - Engine Control Module Power Supply Circuit
P0603 2011 Nissan Sentra Possible Causes
- Loose or poor battery terminal connection
- Low battery charge
- Faulty Engine Control Module (ECM)
- ECM power supply circuit is open or shorted
- ECM Outdated Program
P0603 2011 Nissan Sentra Tech Notes
Start by charging the vehicles battery and clean terminal, once the battery is charged and the terminals are clean and secure, erase code. If the code comes back ON you may have to reprogram or replaced ECM
Cost of diagnosing the P0603 2011 Nissan Sentra code
The cost of diagnosing the P0603 2011 Nissan Sentra code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected?
Indicates the ECM has experienced an internal memory fault.
P0603 2011 Nissan Sentra Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine may not start
P0603 2011 Nissan Sentra Meaning
Battery voltage is supplied to the Engine Control Module (ECM
) even when the ignition switch is turned OFF for the ECM
memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.