OBD-II Generic Error Code P0068: How to Fix It
Medium 30-60 minutes Medium Severity
Verified June 2026
- Error Code
- P0068
- Brand
- OBD-II Generic
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- OBD2 code scanner
- Basic hand tools
- Multimeter
- MAF sensor cleaner
- Flashlight
How to Fix Error Code P0068
-
Connect OBD2 scanner and retrieve codes
Ensure the parking brake is engaged and the vehicle is on level ground before beginning diagnostics. -
Inspect air intake system for vacuum leaks
Keep hands and loose clothing away from moving parts when the engine is running. -
Check MAP sensor connection and wiring
Disconnect the battery negative terminal before working on electrical connections to prevent short circuits. -
Test MAF sensor and clean if necessary
MAF sensor elements are very delicate. Do not touch the sensing wires or use regular cleaners that could damage the sensor. -
Inspect throttle position sensor
Never force the throttle plate open manually, as this can damage the throttle body or electronic throttle control system. -
Clear codes and perform road test
Ensure all components are properly reconnected and secured before starting the engine.
Parts You May Need
MAP sensor
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MAF sensor
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Throttle position sensor
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Vacuum hoses
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MAF sensor cleaner
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MAP sensor
Check Price on Amazon
MAF sensor
Check Price on Amazon
Throttle position sensor
Check Price on Amazon
Vacuum hoses
Check Price on Amazon
MAF sensor cleaner
Check Price on Amazon
MAP sensor
Check Price on Amazon
MAF sensor
Check Price on Amazon
Throttle position sensor
Check Price on Amazon
Vacuum hoses
Check Price on Amazon
MAF sensor cleaner
Check Price on Amazon
MAP sensor
Check Price on Amazon
MAF sensor
Check Price on Amazon
Throttle position sensor
Check Price on Amazon
Vacuum hoses
Check Price on Amazon
MAF sensor cleaner
Check Price on Amazon
MAP sensor
Check Price on Amazon
MAF sensor
Check Price on Amazon
Throttle position sensor
Check Price on Amazon
Vacuum hoses
Check Price on Amazon
MAF sensor cleaner
Check Price on Amazon
MAP sensor
Check Price on Amazon
MAF sensor
Check Price on Amazon
Throttle position sensor
Check Price on Amazon
Vacuum hoses
Check Price on Amazon
MAF sensor cleaner
Check Price on Amazon
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When to Call a Professional
If the error code persists after checking all sensors and vacuum lines, or if you're not comfortable working with electrical components and diagnostic equipment. Professional diagnosis may be needed for internal engine problems or complex electronic throttle control issues.Frequently Asked Questions
Can I drive with P0068 error code?
You can drive short distances, but the vehicle may experience poor performance, rough idling, and reduced fuel economy. It's recommended to diagnose and fix the issue promptly to prevent potential engine damage.
What causes P0068 error code?
Common causes include vacuum leaks in the intake system, faulty MAP or MAF sensors, damaged throttle position sensor, dirty throttle body, or wiring issues between these sensors and the PCM.
How much does it cost to fix P0068?
Costs vary widely depending on the root cause. Simple fixes like cleaning the MAF sensor or repairing vacuum leaks cost $20-50. Sensor replacements typically range from $50-200. Professional diagnosis usually costs $100-150.
Will P0068 cause my car to fail emissions testing?
Yes, P0068 will likely cause your vehicle to fail emissions testing since it indicates an air/fuel mixture problem. The error code must be resolved and the readiness monitors reset before passing inspection.