DTC DETECTION LOGIC
DTC No. | Trouble diagnosis name | Possible cause |
---|---|---|
P0488 | EGR VOLUME CONTROL • 1.DEF: Signal incoherence • 2.DEF: Signal outside lower level • 3.DEF: Signal outside upper level • 4.DEF: Valve outside level • 5.DEF: Defective sensor | • Harness or connectors (The EGR volume control valve circuit is open or shorted.) (The EGR volume control valve control position sensor circuit is open or shorted.) • EGR volume control valve • EGR volume control valve control position sensor • Incorrect EGR volume control valve installation • EGR volume control valve stuck closed • EGR passage clogged |
NOTE:
• Conditions for applying the diagnostic procedure to the stored DTCs: The DTC is declared present after the engine is started.
• Special notes:
— Engine instability, possibly even stalling.
— Difficult to start engine or even impossible when cold.
— Loss of performance.
— Possible smoke emissions.
— Malfunction indicator (Red) lights up.