P1346 — Intake Camshaft Position (CMP) Sensor System Performance

What Does P1346 Mean?

P1346 is a manufacturer-specific diagnostic trouble code: Intake Camshaft Position (CMP) Sensor System Performance. This code applies to BUICK, CADILLAC, CHEVY, CHRYSLER, GM vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1346

⚠️ Check Engine Light (MIL) illuminated
⚠️ Intake Camshaft Position (CMP) Sensor System not meeting expected output
⚠️ Degraded performance of related system
⚠️ Reduced engine performance

Common Causes

🔍 Intake Camshaft Position (CMP) Sensor System degraded from age or contamination
🔍 Mechanical wear in Intake Camshaft Position (CMP) Sensor System or related parts
🔍 Restriction or blockage affecting Intake Camshaft Position (CMP) Sensor System
🔍 Calibration drift in Intake Camshaft Position (CMP) Sensor System

Frequently Asked Questions

What does P1346 mean?

P1346 indicates: Intake Camshaft Position (CMP) Sensor System Performance. The vehicle's computer has detected that the Intake Camshaft Position (CMP) Sensor System is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1346?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1346 for extended periods may cause additional problems.

How much does it cost to fix P1346?

Repair costs for P1346 typically range from $50 to $400, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Intake Camshaft Position (CMP) Sensor System for contamination or wear
🔧 Replace Intake Camshaft Position (CMP) Sensor System
🔧 Address any related mechanical faults

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P1346: Intake Camshaft Position (CMP) Sensor System Performance