Engine-CodesBuick – P1345 Buick

P1345 Buick Code - Crankshaft Position-Camshaft Position Correlation

Quick Answer

The P1345 Buick code indicates a problem with the correlation between the crankshaft position sensor and the camshaft position sensor. Common causes include Faulty crankshaft position sensor, Faulty camshaft position sensor, Damaged timing chain or belt. 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
P1345 Buick indicates Crankshaft Position-Camshaft Position Correlation.
Common causes
Common causes include Faulty crankshaft position sensor, Faulty camshaft position sensor, Damaged timing chain or belt.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1345 Buick Description

The P1345 Buick code indicates a problem with the correlation between the crankshaft position sensor and the camshaft position sensor. These sensors are essential components of the engine's timing system, responsible for ensuring that the engine's pistons and valves operate in perfect synchrony. When these sensors are not properly synchronized, it can lead to poor engine performance, misfires, and potentially severe damage to the engine.

OBDII Code P1345 Buick - Crankshaft Position-Camshaft Position Correlation
P1345 Buick Code - Crankshaft Position-Camshaft Position Correlation

Common Causes of P1345 Buick

  1. Faulty crankshaft position sensor
  2. Faulty camshaft position sensor
  3. Damaged timing chain or belt
  4. Improper sensor installation
  5. Issues with the engine's timing system

Symptoms of P1345 Buick

  1. Engine misfires or rough idling
  2. Reduced engine performance
  3. Stalling or difficulty starting the engine
  4. Check Engine Light illuminated
  5. Poor fuel efficiency

How to Fix P1345 Buick

  1. Diagnose the problem using a scan tool to confirm the P1345 code and determine the root cause of the issue.
  2. Inspect the crankshaft position sensor, camshaft position sensor, and timing chain or belt for any signs of damage or misalignment.
  3. Replace the faulty sensor(s) or timing chain/belt if necessary.
  4. Realign the sensors properly and ensure they are securely installed.
  5. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1345 Buick

The typical repair costs for addressing a P1345 Buick code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor. Keep in mind that rates can fluctuate based on location, vehicle make and model, and the complexity of the repair. It's recommended to obtain a detailed quote from a trusted auto repair shop to get a more accurate estimate for your specific situation.

Tech Notes for P1345 Buick

If this DTC started after recent internal engine repairs, inspect for proper engine mechanical timing. With the camshaft cover removed and the #1 cylinder at top dead center, make sure that the darkened chain links are lined up with the alignment marks on the exhaust and intake cam sprockets.



If a P0016 or P1345 is resetting without any engine performance concerns but the above information did not isolate a cause for the DTC, replace the Cam Phaser Actuator sprocket.

When is the Code Detected?

The ECM detected that the cam and crank sensor positions were out of time

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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