OBD Guide
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P1087

O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1

P1087 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1. Common causes: oxygen sensor malfunction (bank 1 sensor 1), damaged or corroded sensor wiring. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine idling
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Is On
  • Dips during acceleration

Causes

  • Oxygen sensor malfunction (Bank 1 Sensor 1)
  • Damaged or corroded sensor wiring
  • Poor contact in the sensor connector
  • Engine vacuum leak
  • Problems with the fuel supply system

How to Fix

  1. Check the condition of the oxygen sensor and its connector
  2. Check the integrity of the sensor wiring
  3. Check engine for vacuum leaks
  4. Check the operation of the fuel supply system
  5. If necessary, replace the oxygen sensor

Related codes

P0130P0131P0132P0133

Error P1087 by Vehicle Brand

BMWSubaru

FAQ

What does the P1087 code mean?

P1087 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1

What causes a P1087 error code?

The most common causes of P1087 include: Oxygen sensor malfunction (Bank 1 Sensor 1); Damaged or corroded sensor wiring; Poor contact in the sensor connector; Engine vacuum leak.

How do I fix a P1087 diagnostic trouble code?

To fix P1087: Check the condition of the oxygen sensor and its connector. Check the integrity of the sensor wiring. Check engine for vacuum leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1087?

Yes, but get it checked soon

How much does it cost to fix P1087?

The estimated repair cost for P1087 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat