Honda Error Code P1168: How to Fix It

Medium 45-90 minutes Low Severity Verified June 2026
Error Code
P1168
Brand
Honda
Product Type
automotive
Severity
Low
DIY Difficulty
Medium
Estimated Fix Time
45-90 minutes
Honda error code P1168 indicates that the front oxygen sensor labels are mixed up in Bank 1, meaning the engine control module is receiving incorrect data about air-fuel mixture. This is typically a wiring or sensor identification issue rather than a sensor failure.
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Tools You'll Need

How to Fix Error Code P1168

  1. Scan for additional codes

    Ensure the engine is off and cool before connecting the OBD2 scanner.
  2. Locate Bank 1 oxygen sensors

    Allow the engine to cool completely before working on oxygen sensors to prevent burns.
  3. Inspect sensor wiring harnesses

  4. Verify sensor connector positions

    Do not force connectors if they don't fit easily - this indicates incorrect placement.
  5. Check wiring continuity

    Disconnect the battery before performing continuity tests to prevent electrical damage.
  6. Clear codes and test drive

Parts You May Need

Oxygen sensor upstream
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Oxygen sensor downstream
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Wiring harness repair kit
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Electrical connector
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Oxygen sensor upstream
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Oxygen sensor downstream
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Wiring harness repair kit
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Electrical connector
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Oxygen sensor upstream
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Oxygen sensor downstream
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Wiring harness repair kit
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Electrical connector
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Oxygen sensor upstream
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Oxygen sensor downstream
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Wiring harness repair kit
Check Price on Amazon
Electrical connector
Check Price on Amazon
Oxygen sensor upstream
Check Price on Amazon
Oxygen sensor downstream
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Electrical connector
Check Price on Amazon
Oxygen sensor upstream
Check Price on Amazon
Oxygen sensor downstream
Check Price on Amazon
Wiring harness repair kit
Check Price on Amazon
Electrical connector
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if you find damaged wiring that requires extensive repair, if the oxygen sensors themselves need replacement, or if the error code persists after correcting all visible wiring issues. Professional diagnosis may be needed to pinpoint ECM-level problems.

Frequently Asked Questions

What causes Honda error code P1168?
Honda P1168 is caused by incorrectly connected or mislabeled oxygen sensor wiring in Bank 1. This can happen during previous repairs, sensor replacements, or due to damaged wiring harnesses that have been repaired incorrectly.
Can I drive with Honda P1168 error code?
Yes, you can drive with P1168 as it's a low severity code, but your engine may run less efficiently and fuel economy may suffer. The check engine light will remain on until the issue is resolved.
How much does it cost to fix Honda P1168?
If it's just crossed wiring, the fix can cost $100-200 for labor. If oxygen sensors need replacement, expect $200-400 per sensor including labor. Extensive wiring harness repair can cost $300-600 depending on the extent of damage.
Will Honda P1168 cause my car to fail emissions testing?
Yes, P1168 will likely cause your Honda to fail emissions testing because it affects the oxygen sensor system that monitors air-fuel mixture. The code must be resolved and the system must complete its readiness monitors before passing emissions.