P1346 GMC Code - Intake Camshaft Position Sensor System Performance
Quick Answer
The Camshaft Position (CMP) sensor input is used to detect an engine misfire. Common causes include Faulty Intake Camshaft Position sensor, Faulty Camshaft Position Solenoid Valve, Engine mechanical condition. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1346 GMC indicates Intake Camshaft Position Sensor System Performance.
- Common causes
- Common causes include Faulty Intake Camshaft Position sensor, Faulty Camshaft Position Solenoid Valve, Engine mechanical condition.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1346 GMC Description
The PCM receives information on the engine status from various engine sensors and then selects the most appropriate ignition timing settings from within the PCM's programming. The following are the most important inputs for determining ignition timing requirements:
- The engine speed
- The throttle position (TP)
- The intake air volume
- The engine coolant temperature (ECT)
- The knock sensor (KS) input
What are the Possible Causes of the DTC P1346 GMC?
- Faulty Intake Camshaft Position sensor
- Faulty Camshaft Position Solenoid Valve
- Engine mechanical condition
- Valve timing off
- Intake Camshaft Position sensor harness is open or shorted
- Intake Camshaft Position sensor circuit poor electrical connection
How to Fix the DTC P1346 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1346 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1346 GMC Code
1. What does the OBDII code P1346 mean on a GMC vehicle?
P1346 indicates a problem with the intake camshaft position sensor system performance, often related to timing or sensor issues.
2. What are the common symptoms of a P1346 code in a GMC vehicle?
Symptoms include rough idling, reduced engine performance, difficulty starting, and an illuminated check engine light.
3. What causes the P1346 code to appear in a GMC?
Common causes include a faulty camshaft position sensor, issues with the timing chain or belt, oil flow problems, or a malfunctioning variable valve timing (VVT) system.
4. Can low oil levels trigger the P1346 code in GMC vehicles?
Yes, low oil levels or contaminated oil can affect the VVT system's operation, potentially triggering the P1346 code.
5. How is the P1346 code diagnosed in a GMC?
A technician will use a scan tool to confirm the code, inspect the camshaft position sensor, check the timing components, and verify proper oil flow and pressure.
6. Can I drive my GMC with a P1346 code?
Driving with this code is not recommended, as it can lead to poor engine performance and potentially cause further damage to the engine.
7. How do you fix a P1346 code on a GMC?
Repairs may involve replacing the camshaft position sensor, addressing timing chain or belt issues, cleaning or replacing VVT components, or performing an oil change.
8. How much does it cost to repair a P1346 code on a GMC?
Repair costs can range from $150 to $1,000 or more, depending on whether the issue is with the sensor, timing components, or oil system.
9. Can a dirty camshaft position sensor cause the P1346 code?
Yes, a dirty or damaged camshaft position sensor can cause poor readings and trigger the P1346 code.
10. Will clearing the P1346 code fix the problem in a GMC?
Clearing the code will turn off the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.
Discuss the causes and fixes for P1346 GMC OBDII Code
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