GM Error Code P1190: How to Fix It

Q: What causes GM P1190 error code?

GM P1190 is caused by vacuum leaks in the engine intake system. Common sources include cracked vacuum hoses, faulty PCV valve, damaged intake manifold gasket, or loose throttle body connections.

Q: Can I drive with P1190 code?

While you can drive short distances with P1190, it's not recommended for extended periods. The vacuum leak can cause poor fuel economy, rough idling, and potential engine damage if left unrepaired.

Q: How much does it cost to fix P1190?

Repair costs vary widely depending on the leak source. Simple vacuum hose replacement may cost $20-50 for parts, while intake manifold gasket replacement can range from $200-800 including labor.

Q: Will P1190 cause my car to fail emissions test?

Yes, P1190 will typically cause emissions test failure as vacuum leaks affect the air-fuel mixture and can trigger other emission-related error codes.

Abstract

GM error code P1190 indicates an engine vacuum leak has been detected by your vehicle's computer system. This leak can cause rough idling, poor fuel economy, and reduced engine performance.