OBD Guide

P055B

Engine Oil Pressure Sensor/Switch B Range/Performance

P055B is an OBD-II diagnostic trouble code meaning: Engine Oil Pressure Sensor/Switch B Range/Performance. Common causes: oil pressure sensor b malfunction, damage to the sensor wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable engine operation
  • Engine power drop
  • Unusual noises from the engine

Causes

  • Oil pressure sensor B malfunction
  • Damage to the sensor wiring harness
  • Poor contact in the sensor connector
  • Low engine oil level
  • Oil contamination

How to Fix

  1. Check the oil level and condition
  2. Inspect the wiring harness and sensor connector
  3. Check the resistance of the oil pressure sensor
  4. Replace oil pressure sensor if necessary
  5. Clear error codes and test drive

Related codes

Error P055B by Vehicle Brand

FAQ

What does the P055B code mean?

P055B is an OBD-II diagnostic trouble code that indicates: Engine Oil Pressure Sensor/Switch B Range/Performance

What causes a P055B error code?

The most common causes of P055B include: Oil pressure sensor B malfunction; Damage to the sensor wiring harness; Poor contact in the sensor connector; Low engine oil level.

How do I fix a P055B diagnostic trouble code?

To fix P055B: Check the oil level and condition. Inspect the wiring harness and sensor connector. Check the resistance of the oil pressure sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P055B?

Limited driving only, diagnose soon

How much does it cost to fix P055B?

The estimated repair cost for P055B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat