Crankshaft Position Sensor — Audi A4
Category: Engine | Severity: critical | Cost: ₹4,000–₹15,000
What is Crankshaft Position Sensor?
This sensor monitors crankshaft position and speed.
How Crankshaft Position Sensor Works
Sends rotational data to ECU for ignition and injection timing.
Why is Crankshaft Position Sensor Important?
Essential for engine timing and synchronization.
Common Problems
- Sensor failure
- Signal loss
Symptoms
- Engine stalling
- No start
- Misfire
Causes of Failure
- Electrical faults
- Wear
Impact on Car Performance
Failure can stop engine completely.
DIY Fix Guide — Step by Step
- Scan ECU codes
- Check wiring
- Replace faulty sensor
Maintenance Tips
- Regular diagnostics
Replacement Cost in India
Estimated range: ₹4,000 – ₹15,000
Where to Buy Online
When to Replace Crankshaft Position Sensor
Replace if signal failure detected.