Engine-CodesCadillac – P1345 Cadillac

P1345 Cadillac Code - Crankshaft Position-Camshaft Position Correlation

Quick Answer

The P1345 diagnostic trouble code (DTC) for Cadillac vehicles 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, Timing chain/belt misalignment. 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 Cadillac indicates Crankshaft Position-Camshaft Position Correlation.
Common causes
Common causes include Faulty crankshaft position sensor, Faulty camshaft position sensor, Timing chain/belt misalignment.
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 Cadillac Description

The P1345 diagnostic trouble code (DTC) for Cadillac vehicles indicates a problem with the correlation between the crankshaft position sensor and the camshaft position sensor. This correlation is crucial for the engine control module (ECM) to accurately determine the position of the engine's pistons and valves. If the ECM detects that the signals from these sensors are not synchronized properly, it will trigger the P1345 code and illuminate the check engine light.

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

Common Causes of P1345 Cadillac

  1. Faulty crankshaft position sensor
  2. Faulty camshaft position sensor
  3. Timing chain/belt misalignment
  4. Timing chain/belt wear
  5. Engine mechanical issues

Symptoms of P1345 Cadillac

  1. Check engine light illuminated
  2. Engine misfires
  3. Rough idling
  4. Decreased fuel efficiency
  5. Engine stalling

How to Fix P1345 Cadillac

  1. Perform a diagnostic scan to confirm P1345 code and identify the specific cause.
  2. Inspect the crankshaft and camshaft sensors for any signs of damage or misalignment.
  3. Check the timing chain/belt for slack or wear and replace if necessary.
  4. Inspect the engine components for any mechanical issues that may be affecting the correlation.
  5. Clear the DTC and reset the ECM after completing the repairs.

Cost to Fix P1345 Cadillac

The cost of repairing a P1345 code on a Cadillac can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that rates at auto repair shops can vary, so it's recommended to get a few quotes before proceeding with the repairs.

Tech Notes for P1345 Cadillac

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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