OBD Guide
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P1094

O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1

P1094 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1. Common causes: worn oxygen sensor, sensor contamination (oil, carbon deposits). Estimated repair cost: $17–56.

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

Symptoms

  • Increased fuel consumption
  • Unstable engine operation at idle
  • Check Engine light comes on
  • Reduced engine power
  • Unstable exhaust gases

Causes

  • Worn oxygen sensor
  • Sensor contamination (oil, carbon deposits)
  • Problems with wiring or connectors
  • Leaks in the exhaust system
  • Malfunctions in the fuel supply system

How to Fix

  1. Check the condition of the oxygen sensor Bank 2 Sensor 1
  2. Inspect wiring and connectors for damage
  3. Check the exhaust system for leaks
  4. Clean or replace the oxygen sensor
  5. Check the operation of the fuel supply system

Related codes

P1093P1095P0135

Error P1094 by Vehicle Brand

BMWSubaru

FAQ

What does the P1094 code mean?

P1094 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1

What causes a P1094 error code?

The most common causes of P1094 include: Worn oxygen sensor; Sensor contamination (oil, carbon deposits); Problems with wiring or connectors; Leaks in the exhaust system.

How do I fix a P1094 diagnostic trouble code?

To fix P1094: Check the condition of the oxygen sensor Bank 2 Sensor 1. Inspect wiring and connectors for damage. Check the exhaust system for leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1094?

Yes, but get it checked soon

How much does it cost to fix P1094?

The estimated repair cost for P1094 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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