P0520 on Jeep Wrangler
Engine Oil Pressure Sensor/Switch A Circuit
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Jeep Wrangler context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0520.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0520 Means on Your Jeep Wrangler
P0520 is a diagnostic trouble code indicating: Engine Oil Pressure Sensor/Switch A Circuit. This code relates to the vehicle speed and idle control system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Jeep Wrangler Owner Reports
Source: NHTSA Complaints Database
"My check engine light illuminated and the engine was running rough, possible loss of power. per jeep / chrysler / dodge / ram / mopar technical service bulletin 18-034-14 rev."
"Vehicle showing cel (check engine light) with no performance issues noted. code read and shows p0520 related to the oil pressure sensor switch. after reviewing forums, determined that a tsb exists but no recall although the design of the unit has been changed due to defect."
"P0520 - engine oil pressure sensor circuit. tsb- 18-034-14 rev.a issued: 07/15/147 there has been problems with the sensor for years, multiple forums with complaints related to this issue in not only jeep, but many chrysler 3.6 liter engines."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Jeep Wrangler
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.