P0342: Camshaft Position Sensor Circuit Low Input
Can you still drive? The engine may start and run, but with reduced performance. If the sensor fails completely, the engine may not start.
What Does P0342 Mean?
Code P0342 indicates the camshaft position sensor is producing a voltage below the expected range. The camshaft position sensor tells the ECM the position of the camshaft for sequential fuel injection and variable valve timing control. A low signal can disrupt these functions.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed camshaft position sensor
- Open circuit in sensor wiring
- Corroded connector pins
- Damaged tone ring on camshaft
- Low battery voltage affecting sensor output
Symptoms
- Check engine light on
- Hard starting
- Rough idle
- Reduced engine power
- Engine may default to batch fire injection
Diagnostic Steps
- 1Check camshaft sensor signal on scan tool while cranking
- 2Measure sensor resistance and compare to specifications
- 3Inspect connector and wiring for damage or corrosion
- 4Check tone ring on camshaft for damage
- 5Verify battery voltage is within normal range
Recommended Parts & Tools
camshaft position sensor
electrical contact cleaner
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $50 - $300 |
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Chat with AI About P0342Commonly Affected Vehicles
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Frequently Asked Questions
What happens without a camshaft position sensor signal?
The ECM loses the ability to time sequential fuel injection accurately. It may revert to batch-fire injection, causing rough running and increased emissions.
Is a camshaft sensor easy to replace?
On most vehicles, the camshaft position sensor is externally mounted and accessible, making it a straightforward replacement with basic tools.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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