AutoCodes – Dodge – P0521 Dodge

P0521 Dodge Code - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

Quick Answer

The PCM continuously monitors the engine oil pressure. Common causes include Low oil level or motor mechanical fault, Faulty Oil Pressure sensor, Oil Pressure Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0521 Dodge indicates Engine Oil Pressure Sensor/Switch Circuit Range/Performance.
Common causes: Common causes include Low oil level or motor mechanical fault, Faulty Oil Pressure sensor, Oil Pressure Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 31,295

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0521 Dodge Description

The PCM continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM when the engine is running.

OBDII Code P0521 Dodge - Engine Oil Pressure Sensor/Switch Circuit Range/Performance - AutoCodes.com — P0521 Dodge Code - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0521 Dodge?

Low oil level or motor mechanical fault
Faulty Oil Pressure sensor
Oil Pressure Sensor harness is open or shorted
Oil Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0521 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0521 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.