OBD Guide
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P1088

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

P1088 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Slow Response in Rich Control Range Bank 1 Sensor 1. Common causes: oxygen sensor malfunction, sensor contamination (oil, antifreeze). 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 idling
  • Dips during acceleration
  • Check Engine light comes on
  • Increased level of harmful emissions

Causes

  • Oxygen sensor malfunction
  • Sensor contamination (oil, antifreeze)
  • Problems with wiring or connectors
  • Leaks in the exhaust system
  • Fuel system malfunction (mixture too rich)

How to Fix

  1. Check the condition of the oxygen sensor
  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 system

Related codes

P0130P0131P0132P0133

Error P1088 by Vehicle Brand

BMWSubaru

FAQ

What does the P1088 code mean?

P1088 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Slow Response in Rich Control Range Bank 1 Sensor 1

What causes a P1088 error code?

The most common causes of P1088 include: Oxygen sensor malfunction; Sensor contamination (oil, antifreeze); Problems with wiring or connectors; Leaks in the exhaust system.

How do I fix a P1088 diagnostic trouble code?

To fix P1088: Check the condition of the oxygen sensor. 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 P1088?

Yes, but get it checked soon

How much does it cost to fix P1088?

The estimated repair cost for P1088 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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