SureTrack Real Fix: Movano EGR Malfunction

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Real Fixes from the SureTrack® 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-on® diagnostic software version.

Vehicle

2021 Opel Vauxhall Movano 2.3L Diesel

Title

P0400-00, Replaced Exhaust Gas Recirculation Valve

Complaint

The customer states that the check engine light is on.

Cause

Confirmed the customer’s complaint regarding the check engine light being on. Connected a scan tool and identified code P0400-00, indicating an issue with the Exhaust Gas Recirculation (EGR) Valve “A” Flow. During a test drive, monitored live data using the scan tool, revealing that the exhaust gas recirculation valve parameter was not within specified limits.

With the key on and the engine off, commanded the exhaust gas recirculation valve using the scan tool, but observed that the valve was not functioning properly. Conducted a visual inspection of the exhaust gas recirculation valve, detecting no visible faults. Inspected the exhaust gas recirculation valve sensor wiring harness and connectors, confirming there were no loose connections or signs of damage.

Used a multi-meter to check for the presence of voltage at the exhaust gas recirculation valve with the key on and engine off, confirming the presence of voltage. Additionally, checked the exhaust gas recirculation valve wiring harness for any shorts or opens using the multi-meter, finding none. Removed the exhaust gas recirculation valve and employed a set of fused jumper wires to apply voltage and ground repeatedly to the valve, determining that the valve did not operate as expected. These comprehensive tests confirmed that the exhaust gas recirculation valve was faulty.

Correction

Replaced the exhaust gas recirculation valve, cleared codes, reset parameters, performed a road test, and verified that the vehicle operated properly. The check engine light did not illuminate and no fault codes returned.

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About the Author

Ross Whiteley

Ross Whiteley, Product Marketing Manager of Repair Products for Mitchell 1, has held roles of increasing responsibility at Snap-on over the past 14 years. Previously, Ross served as Product Manager for SUN Collision, Mitchell 1’s sister company, and as a Client Services Manager at Mitchell 1. He began his career after high school as a UPS driver in 1997 and went on to earn his MBA in business management with a concentration in Project Management at Purdue University. In the interim, he held various positions in the auto industry, including roles as Service Consultant at Lithia Chrysler Dodge and Assistant Service Manager at Cascade Automotive.