P0521-Engine Oil Sensor Level Performance: Notes

Fig 1: Engine Oil Level Sensor Circuit Schematic

Courtesy of CHRYSLER LLC

When Monitored : With the ignition on, engine running.
Set Condition : Anytime the Powertrain Control Module (PCM) senses the Oil Level with the engine off is outside the values of 34 - 62 mm (1.34 - 2.44 in.) and with the engine running, the values of 15 - 45 mm (0.59 - 1.77 in.).

Note: Check and verify that the engine oil level is at the appropriate level.

Possible Causes

OIL SENSOR SIGNAL CIRCUIT OPEN

OIL SENSOR SIGNAL CIRCUIT SHORT TO GROUND

OIL SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

5-VOLT SUPPLY CIRCUIT OPEN

5-VOLT SUPPLY CIRCUIT SHORT TO GROUND

5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE

5-VOLT SUPPLY CIRCUIT SHORT TO SENSOR GROUND CIRCUIT

OIL SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIRCUIT

OIL SENSOR SIGNAL CIRCUIT SHORT TO 5-VOLT SUPPLY CIRCUIT

SENSOR GROUND CIRCUIT OPEN

MANIFOLD ABSOLUTE PRESSURE SENSOR

ENGINE OIL SENSOR

POWERTRAIN CONTROL MODULE

For a complete Powertrain Control Module Circuit Diagram, refer to SCHEMATICS AND DIAGRAMS .