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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Powertrain Diagnostic Procedures - Diesel) >> Diagnostic Information And Procedures >> DRIVEABILITY - Diesel - Diagnostic Tests >> P0402-EGR Solenoid Circuit Negative Deviation; P0402-EGR Solenoid Circuit Positive Deviation >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

AIR FILTER

AIR RESTRICTION

CHECKING FOR AIR LEAKS

EGR VALVE

INTERMITTENT CONDITION

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