Fault code P0522 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0522 – Engine Oil Pressure Sensor/Switch Circuit Low Voltage

P0522: Causes, signs and repairs

Error code P0522 is displayed and the check engine light is on - what does this mean?

The OBD/EOBD system has detected that the oil pressure sensor circuit has too low a voltage. This DTC P0522 relates to the engine oil pressure system and the associated sensor that monitors the oil pressure. For various manufacturers, this fault code may also be referred to as "Engine Oil Pressure Sensor/Switch Circuit Low Input".

What causes can this error code have?

Defective oil pressure sensor
Damaged wiring to the oil pressure sensor
Corroded or loose plug connections
Low oil level in the engine
Clogged oil filter
Defective oil pump
Short circuit in the sensor cable to ground
Faulty engine control unit (ECU)

What symptoms occur in parallel with fault code P0522?

Check engine light: The check engine light is permanently activated
Oil pressure warning: Additional warning light for low oil pressure may light up
Engine noises: Knocking or rattling noises due to insufficient lubrication
Loss of power: Reduced engine power in emergency running mode
Starting problems: Difficulty starting the engine or rough idling
Oil pressure indicator: Incorrect or no display of oil pressure on the dashboard

How to fix the problem of error code P0522?

The repair requires a systematic diagnosis to identify the exact cause.
Check the oil level and top up or change the engine oil if necessary, as low oil level is often the cause
Replace the oil pressure sensor if it is defective or provides incorrect values (costs: 30-80 euros)
Check the wiring to the sensor for damage, short circuits or breaks and repair them
Clean and tighten the plug connections on the oil pressure sensor to eliminate contact problems
Change the oil filter if it is clogged and affects the oil pressure
Have the oil pump replaced if it is defective and does not generate sufficient oil pressure (workshop work required)
Check the engine control unit for errors and have it reprogrammed or replaced if necessary

FAQ - Frequently asked questions about DTC P0522

Can I continue driving with error code P0522?

No, you should not continue driving if error code P0522 occurs. Low oil pressure can lead to serious engine damage. Stop immediately and check the oil level.

How much does it cost to repair error code P0522?

The costs vary depending on the cause: oil change 50-100 euros, oil pressure sensor 80-150 euros, wiring repair 100-200 euros. A defective oil pump can cost between 500-1500 euros.

How do I recognize a defective oil pressure sensor on P0522?

A defective sensor usually displays constantly low or fluctuating values. You can measure the voltage at the sensor with a multimeter - it should be between 0.5-4.5 volts.

Can low oil level cause error code P0522?

Yes, low oil level is a common cause of P0522. First check the oil level with the dipstick and top up the oil if necessary.

How often does trouble code P0522 occur in older vehicles?

P0522 occurs more frequently in vehicles over 100,000 km as oil pressure sensors and oil pumps wear out. Regular oil changes can reduce the risk.

What consequential damage can fault code P0522 cause?

Untreated low oil pressure can lead to bearing damage, piston seizure or complete engine damage. Immediate action is therefore essential.

Vehicles in which error code P0522 occurs most frequently

Fault code P0522 is a standard EOBD trouble code that indicates problems with the oil pressure sensor circuit and can occur in all modern vehicles, but is most common in the following vehicles:

Chevrolet: Silverado, Tahoe, Suburban, Impala (2005-2015)
GMC: Sierra, Yukon, Acadia (2007-2016)
Ford: F-150, Explorer, Edge, Fusion (2008-2018)
Dodge: Ram 1500, Charger, Challenger (2009-2019)
Jeep: Grand Cherokee, Wrangler, Cherokee (2011-2020)
Nissan: Altima, Maxima, Pathfinder (2007-2017)
Honda: Accord, Civic, CR-V (2006-2016)
Toyota: Camry, RAV4, Highlander (2010-2019)
Volkswagen: Passat, Jetta, Tiguan (2008-2018)
BMW: 3 Series, 5 Series, X3, X5 (2006-2017)
Mercedes-Benz: C-Class, E-Class, ML-Class (2007-2016)
Audi: A4, A6, Q5 (2009-2018)

If code P0522 occurs in your vehicle, you should check the oil level immediately and visit a specialist workshop if necessary. As this fault code can cause serious engine damage, a quick diagnosis and repair is essential. Modern diagnostic equipment can help to identify the exact cause of the problem.

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