Diagnosing & Fixing P0016 Fault Code in 2001-2006 Mitsubishi Montero 3.5L & 3.8L

Introduction

Imagine this: You're driving your 2001-2006 Mitsubishi Montero 3.5L or 3.8L, enjoying its rugged performance, when suddenly the Check Engine Light comes on. A quick scan with an OBD-II tool reveals the P0016 fault code. What does it mean, and how do you fix it?

At AUTOTEK, we believe in helping vehicle owners make informed repair decisions. This guide will walk you through diagnosing, troubleshooting, and fixing P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) in your Mitsubishi Montero.

Understanding P0016 – Crankshaft Position vs. Camshaft Position Correlation Issue

The P0016 fault code occurs when the Engine Control Module (ECM) detects a misalignment between the crankshaft position sensor (CKP) and the camshaft position sensor (CMP). This can be caused by timing belt issues, worn timing components, or sensor failure.

Common Symptoms of P0016 in a Mitsubishi Montero:

• Check Engine Light illuminated
• Engine misfires or rough idling
• Loss of power or hesitation during acceleration
• Engine stalling or failing to start
• Reduced fuel efficiency

Step-by-Step Diagnosis of P0016

Before replacing any parts, it’s essential to properly diagnose the issue.

Step 1: Scan for Fault Codes

• Use an OBD-II scanner to confirm the presence of P0016.
• Check for related fault codes like P0017, P0018, or P0019, which may indicate a broader timing issue.

Step 2: Inspect the Timing Belt & Components

• Remove the timing belt cover and inspect the timing belt (MD358557) for wear, cracks, or missing teeth.
• Check the timing belt tensioner pulley (MD140071) for proper function and alignment.
• Verify that the timing belt adjuster (MD362861) is properly tensioned and functioning correctly.

Step 3: Check Camshaft & Crankshaft Sensors

• Locate the Camshaft Position Sensor (CMP) and Crankshaft Position Sensor (CKP).
• Inspect the wiring harness for damage, corrosion, or loose connections.
• Use a multimeter to test sensor output voltage and resistance.

Step 4: Verify Timing Alignment

• Rotate the crankshaft pulley to align with Top Dead Center (TDC).
• Ensure that the camshaft pulleys (MD319022) are properly aligned.
• If timing marks do not line up, the belt may have slipped and needs replacement.

Step 5: Reset the Fault Code & Test Drive

• Clear the P0016 code using an OBD-II scanner.
• Start the engine and monitor timing synchronization and engine performance.
• If the code returns, proceed with part replacement.

Recommended Fix for Mitsubishi Montero P0016 Code

After diagnosing the issue, the most effective solution is to replace worn or faulty timing components.

✅ Recommended Part Replacements:

• Timing Belt (MD358557) – If the belt is stretched, cracked, or missing teeth.
• Timing Belt Tensioner Pulley (MD140071) – If the belt tension is loose or misaligned.
• Valve Timing Pulley (MD319022) – If the camshaft pulley shows wear or damage.
• Timing Belt Adjuster (MD362861) – If the belt adjuster is unable to maintain proper tension.
• Rocker Cover Gasket (MD303148) – If leaking oil is affecting the timing components.

Replacement Procedure:

1. Disconnect the battery to prevent electrical damage.
2. Remove the timing belt cover and inspect all components.
3. Align the timing marks on the camshaft and crankshaft pulleys.
4. Replace the timing belt, tensioner pulley, and adjuster as needed.
5. Reassemble all components and reinstall the timing cover.
6. Reconnect the battery and start the engine.
7. Clear the fault codes and perform a test drive.

Similar Fault Codes & Reference

The P0016 fault code is related to timing correlation issues, and similar problems can trigger related fault codes:

• P0017 – Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
• P0018 – Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
• P0019 – Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)

If your diagnostic scan reveals any of these codes, you can follow the same diagnostic and repair steps outlined in this guide.

Conclusion

The P0016 fault code in a 2001-2006 Mitsubishi Montero 3.5L or 3.8L is often caused by a worn timing belt, faulty timing components, or misalignment of the camshaft and crankshaft sensors. Proper diagnosis and timely replacement of the affected components can restore full engine performance and reliability.

If you’re experiencing this issue, consider replacing the necessary parts, available on AUTOTEK. Need expert guidance? Contact us for professional support.

Need More Help?

If you have any questions or need further assistance, our team at AUTOTEK is here to help! Leave a comment below or contact us directly.