What is the OBD 2 fault code p1441?
OBD II fault code P1441 is a manufacturer specific code that is defined by carmakers Acura, Citroen/Peugeot, GM, and Isuzu, among many others as “Evaporative Emission (EVAP) System Flow during Non-Purge”, and on these applications, code P1441 is set when the PCM (Powertrain Control Module) detects an undesired flow…
When to set code p1441 on EVAP system?
Having said all of the above though, code P1441 is more likely to be set without other codes when the PCM detects a flow of fuel vapors through the EVAP system at a time when there should not be a flow, as opposed to when the EVAP fails a self-test or fails to complete a readiness monitor.
What causes a p1441 on a GMC Sierra?
Typical common causes of P1441 could include the following- Defective purge control valve. (The most likely cause) Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors NOTE: Be aware that the charcoal canisters on GM applications are particularly susceptible to damage caused by over filling the fuel tank.
What causes a charcoal canister to leak p1441?
Typical common causes of P1441 could include the following- Defective purge control valve. Defective charcoal canister Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors Leaks in vacuum lines Leaking fuel filler cap
How to diagnose and repair code p1441?
However, the generic diagnostic and repair steps outlined in this guide should enable most non-professional mechanics to diagnose and repair code P1441 – “Evaporative Emission (EVAP) System Flow during Non-Purge” successfully on almost any application. END OF SPECIAL NOTES.
How to diagnose p1441 Chevrolet EVAP system flow?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost of diagnosing the P1441 CHEVROLET code is 1.0 hour of labor.
What is the error code for EVAP system flow?
Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac, etc.
What causes a fuel tank to leak p1441?
P1441 Possible Causes 1 Missing or loose fuel cap 2 Incorrect fuel filler cap used 3 Fuel filler cap remains open or fails to close 4 Foreign matter caught in fuel filler cap 5 EVAP canister or fuel tank leaks 6 EVAP system hose leaking 7 Fuel tank leaking