I am experiencing an issue with my 2003 extended cab V6 truck that cranks but won't start. I have retrieved trouble codes P0442, P1626, P0455, and U1041. I need help diagnosing the problem and finding a solution. Any assistance would be greatly appreciated!

To diagnose the crank-no-start issue in your 2003 extended cab V6 truck, analyze the trouble codes: P0442 (small EVAP leak), P1626 (theft deterrent signal issue), P0455 (large EVAP leak), and U1041 (ABS communication loss). Check the gas cap for tightness and inspect EVAP hoses for damage. Ensure the battery is charged and connections are clean. Verify the key recognition and ignition switch functionality for the P1626 code. Addressing these areas will help identify the root cause of the starting problem.

Why Does My 2003 Extended Cab V6 Crank but Not Start?

Understanding the Issue: 2003 Extended Cab V6 Cranks but Won’t Start

Experiencing a crank-no-start condition in your 2003 extended cab V6 truck can be frustrating. To resolve this issue, we’ll analyze the trouble codes you've provided, along with a step-by-step troubleshooting guide.

Trouble Codes Overview

You've retrieved the following trouble codes:

P0442: Evaporative Emission Control System Leak Detected (small leak)
P1626: Theft Deterrent Fuel Enable Signal Not Received
P0455: Evaporative Emission Control System Leak Detected (large leak)
U1041: Loss of Communication with Anti-lock Brake System (ABS) Control Module

Understanding these codes is crucial to diagnosing the problem.

Trouble Code Analysis

P0442 and P0455

Both of these codes indicate an issue with the evaporative emission control (EVAP) system. While P0442 signifies a small leak, P0455 indicates a larger leak. Common causes include:

Loose or damaged gas cap: Check if it is properly secured.
Hoses and connectors: Inspect for cracks or disconnections in the EVAP system.

P1626

This code suggests that the vehicle's security system is preventing the engine from starting. This can happen if:

Why Does My 2003 Extended Cab V6 Crank but Not Start?

Understanding the Issue: 2003 Extended Cab V6 Cranks but Won’t Start

Trouble Codes Overview

Trouble Code Analysis

P0442 and P0455

P1626

Still need help?

U1041

Step-by-Step Troubleshooting Guide

Step 1: Basic Checks

Step 2: Inspect the EVAP System

Step 3: Address the P1626 Code

Step 4: Investigate U1041 Code

Common Pitfalls to Avoid

Conclusion

Additional Resources