GM Vehicle Error Code P1106: How to Fix It

Q: What causes GM error code P1106?

P1106 is typically caused by a faulty MAP sensor, damaged wiring harness, loose electrical connections, vacuum leaks, or intermittent PCM issues. The most common cause is a failing MAP sensor that sends inconsistent voltage signals to the engine control module.

Q: Can I drive with GM code P1106?

You can typically drive short distances with P1106, but the vehicle may experience reduced performance, poor fuel economy, and rough idling. It's best to diagnose and fix the issue promptly to prevent potential engine damage and ensure optimal performance.

Q: How much does it cost to fix GM P1106?

If the MAP sensor needs replacement, expect to pay $50-150 for the part plus 1-2 hours of labor. If it's just a loose connection or damaged vacuum hose, the repair could cost under $50. Professional diagnosis typically costs $100-150.

Q: Will P1106 cause my GM vehicle to fail emissions testing?

Yes, P1106 will likely cause your vehicle to fail emissions testing since it affects the air-fuel mixture calculations. The error code must be resolved and the readiness monitors must complete before passing emissions tests.

Q: How do I reset GM error code P1106?

Use an OBD2 scanner to clear the code after fixing the underlying problem. Simply clearing the code without repairs will cause it to return. The vehicle's computer needs to complete several drive cycles to verify the repair was successful.

Abstract

GM error code P1106 indicates an intermittent high voltage condition in the Manifold Absolute Pressure (MAP) sensor circuit. This sensor measures engine vacuum and atmospheric pressure to help the PCM calculate proper fuel delivery and ignition timing. When this error occurs, you may experience rough idling, poor fuel economy, or reduced engine performance.