SureTrack Real Fix: MINI P1476

Real Fixes from the SureTrackĀ® expert information resource are documented issues from actual shop repair orders and community discussions. Read on to see how SureTrack can help you correct issues that are not easily diagnosed using OEM information alone. SureTrack is currently available free with the purchase of a current Snap-onĀ® diagnostic software version.

Follow this SureTrack Real Fix to see how code P1476 was diagnosed on this 2004 MINI Cooper and the subsequent repair.

2004 MINI Cooper S 1.6L

P1476, Replaced EVAP Leak Detection Pump

The customer states the check engine light is on.

Connected a scan tool and found code P1476 – Leakage Diagnostic Pump Clamped Tube. Performed a visual inspection of the evaporative emission (EVAP) system and found no obvious faults. Used the scan tool to seal the EVAP system by commanding the EVAP purge solenoid valve and EVAP vent solenoid closed. Connected a smoke machine to the system, induced smoke to check for leaks, and found that no smoke leaked from the EVAP system. Performed a visual inspection of the EVAP leak detection pump wiring harness and found no obvious faults. With the key on, engine off, used the scan tool to observe the EVAP leak detection pump parameter and found it did not operate the pump as commanded by the scan tool. Used a multi-meter to check for the presence of power and ground at the EVAP leak detection pump harness connector and found both battery power and ground were present. Used the multi-meter to test the continuity of the EVAP leak detection pump wiring harness and found it was operating properly. These test results verified the EVAP leak detection pump was faulty.

Replaced the EVAP leak detection pump, cleared codes, performed a road test and verified the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.

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About the Author

Nick Taylor

Nick Taylor is the SureTrack Community Administrator and a Senior Applications Specialist at Mitchell 1 with over 25 years of experience with electronic repair data systems. Nick previously worked in the automotive dismantling and engine rebuilding industries.