OBD Guide
ENFRDEESPT

P1086

Fuel Control Mixture Rich Bank 2 Sensor 1

P1086 is an OBD-II diagnostic trouble code meaning: Fuel Control Mixture Rich Bank 2 Sensor 1. Common causes: malfunction of fuel injectors, problems with the mass air flow sensor (maf). Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Increased fuel consumption
  • Reduced engine power
  • Black smoke from the exhaust pipe
  • Unstable engine idling
  • Smell of gasoline from the exhaust pipe

Causes

  • Malfunction of fuel injectors
  • Problems with the mass air flow sensor (MAF)
  • Vacuum leak
  • Oxygen sensor malfunction
  • Problems with the fuel pressure regulator

How to Fix

  1. Check fuel injectors for leaks
  2. Diagnose mass air flow sensor and oxygen sensor
  3. Check vacuum hoses for leaks
  4. Check fuel pressure
  5. Clean or replace the air filter

Related codes

P0172P0175P1087

Error P1086 by Vehicle Brand

BMWSubaru

FAQ

What does the P1086 code mean?

P1086 is an OBD-II diagnostic trouble code that indicates: Fuel Control Mixture Rich Bank 2 Sensor 1

What causes a P1086 error code?

The most common causes of P1086 include: Malfunction of fuel injectors; Problems with the mass air flow sensor (MAF); Vacuum leak; Oxygen sensor malfunction.

How do I fix a P1086 diagnostic trouble code?

To fix P1086: Check fuel injectors for leaks. Diagnose mass air flow sensor and oxygen sensor. Check vacuum hoses for leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1086?

Yes, but get it checked soon

How much does it cost to fix P1086?

The estimated repair cost for P1086 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat