Crankshaft Position Sensor — MG Motor Majestor
Category: Electrical | Severity: high | Cost: ₹2,000–₹8,000
What is Crankshaft Position Sensor?
Monitors crankshaft speed and position to control ignition timing and fuel injection.
How Crankshaft Position Sensor Works
Uses magnetic or Hall effect sensing to detect crankshaft rotation and send signals to ECU.
Why is Crankshaft Position Sensor Important?
Critical for engine timing and smooth operation.
Common Problems
- Sensor failure
- Signal loss
- Wiring damage
Symptoms
- Engine stalling
- No start
- Rough idling
Causes of Failure
- Heat
- Oil contamination
- Electrical faults
Impact on Car Performance
Failure can completely stop engine operation.
DIY Fix Guide — Step by Step
- Scan error codes
- Inspect wiring
- Clean sensor area
- Replace if faulty
Maintenance Tips
- Avoid oil leaks near sensor
- Regular diagnostics
Replacement Cost in India
Estimated range: ₹2,000 – ₹8,000
Where to Buy Online
When to Replace Crankshaft Position Sensor
When engine misfires or fails to start due to sensor fault.