DTC code

P0405: P0405 Diagnostic Guide

Vehicle-specific published guides for this diagnostic trouble code.

P0405 Diagnostic Guide

P0405 usually means the controller may be seeing the EGR position feedback lower than expected.

Article vehicle: 2020-2025 Chevrolet Silverado 2500 6.6 diesel

P0405 may mean the PCM is seeing the electric EGR valve position sensor signal lower than expected.

Article vehicle: 2015-2025 Ford F150 2.7 EcoBoost

P0405 means the PCM may be seeing an EGR position sensor signal that is lower than expected.

Article vehicle: 2019-2025 Ram 1500DT 3.6PentastarGas