C101A
Vacuum Pressure Sensor
C101A is an OBD-II diagnostic trouble code meaning: Vacuum Pressure Sensor. Common causes: vacuum pressure sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation at idle
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced braking system efficiency
Causes
- Vacuum pressure sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- Vacuum leak in the system
How to Fix
- Check the integrity of the wiring harness and sensor connector
- Check for vacuum leaks in the system
- Replace vacuum pressure sensor if necessary
- Reset the error and check if it returns
Related codes
FAQ
What does the C101A code mean?
C101A is an OBD-II diagnostic trouble code that indicates: Vacuum Pressure Sensor
What causes a C101A error code?
The most common causes of C101A include: Vacuum pressure sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Vacuum leak in the system.
How do I fix a C101A diagnostic trouble code?
To fix C101A: Check the integrity of the wiring harness and sensor connector. Check for vacuum leaks in the system. Replace vacuum pressure sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C101A?
Limited driving only, diagnose soon
How much does it cost to fix C101A?
The estimated repair cost for C101A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat