High Pressure Sensor — Nissan Gravite
Category: AC | Severity: high | Cost: ₹2,000–₹6,000
What is High Pressure Sensor?
Monitors refrigerant pressure on the high-pressure side to protect the AC system.
How High Pressure Sensor Works
Sends pressure data to ECU which adjusts compressor operation.
Why is High Pressure Sensor Important?
Prevents system damage due to excessive pressure.
Common Problems
- Sensor failure
- Incorrect readings
- Wiring issues
Symptoms
- AC shuts off
- Erratic cooling
- Warning lights
Causes of Failure
- Electrical faults
- Wear
- Heat exposure
Impact on Car Performance
Leads to system shutdown or unsafe pressure levels.
DIY Fix Guide — Step by Step
- Scan error codes
- Check wiring
- Inspect connector
- Replace faulty sensor
Maintenance Tips
- Avoid overcharging refrigerant
- Regular diagnostics
Replacement Cost in India
Estimated range: ₹2,000 – ₹6,000
Where to Buy Online
When to Replace High Pressure Sensor
Replace when sensor gives incorrect readings.