C1422 Code - Master Cylinder Pressure Sensor Zero Point High Malfunction
Quick Answer
The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly) in the Brake Actuator Assembly. Common causes include Faulty Stop Light Switch Assembly, Stop Light Switch Assembly harness is open or shorted, Stop Light Switch Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1422 indicates Master Cylinder Pressure Sensor Zero Point High Malfunction.
- Common causes
- Common causes include Faulty Stop Light Switch Assembly, Stop Light Switch Assembly harness is open or shorted, Stop Light Switch Assembly circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1422 Description
What are the Possible Causes of the DTC C1422?
- Faulty Stop Light Switch Assembly
- Stop Light Switch Assembly harness is open or shorted
- Stop Light Switch Assembly circuit poor electrical connection
- Faulty Skid Control ECU (Brake Actuator Assembly)
How to Fix the DTC C1422?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1422 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C1422 Lexus — Master Cylinder Pressure Sensor Zero Point High Malfunction
- C1422 Scion — Master Cylinder Pressure Sensor Zero Point High Malfunction
- C1422 Toyota — Master Cylinder Pressure Sensor Zero Point High Malfunction
Frequently Asked Questions about C1422 Code
1. What does the OBDII code C1422 indicate?
The code C1422 signifies a "Master Cylinder Pressure Sensor Zero Point High Malfunction," which means that the sensor monitoring the brake fluid pressure in the master cylinder is reporting abnormally high baseline readings.
2. What are the common symptoms of code C1422?
Symptoms can include an illuminated check engine light, abnormal brake pedal feel, and possible changes in braking performance, making the vehicle feel less responsive when braking.
3. What could cause the OBDII code C1422 to be triggered?
Possible causes include a faulty master cylinder pressure sensor, electrical issues like shorted or open circuits, or a problem with the brake fluid levels that affect sensor readings.
4. How can I troubleshoot the C1422 code?
Start by checking the brake fluid level and condition. Inspect the wiring and connectors for the pressure sensor for any signs of damage or corrosion. If these are fine, consider testing or replacing the master cylinder pressure sensor.
5. Can I drive my vehicle with the C1422 code active?
While you might be able to drive, it's not recommended as the braking system may not perform optimally. Addressing the issue promptly is important for safety.
6. What are the steps to reset the master cylinder pressure sensor to clear the C1422 code?
After repairing the underlying issue, you can clear the code using an OBDII scan tool. To reset the sensor, disconnect the battery for a few minutes, then reconnect it, which can help recalibrate the sensor readings.
7. Is the master cylinder pressure sensor expensive to replace?
The cost can vary depending on the vehicle make and model but generally falls within the moderate price range. Labor costs can add to the overall expense as accessing the sensor might be complex.
8. Could ignoring the C1422 code lead to further vehicle damage?
Yes, ignoring this issue could lead to reduced braking performance or failure, which is dangerous and could potentially lead to accidents or more severe mechanical damage.
9. What type of maintenance can prevent the C1422 code?
Regular maintenance of the braking system, including checking and replacing brake fluid as needed and inspecting the brake system components during routine service, can help prevent this issue.
10. How often does the master cylinder pressure sensor need to be calibrated?
Calibration needs can vary, but it's good practice to have the sensor checked and calibrated during routine brake system inspections or whenever service is performed on the braking system.
Discuss the causes and fixes for C1422 OBDII Code
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