327-336

NOTE
KOEO refers to Key On Engine Off (KOEO)
KOER refers to Key On Engine Running (KOER)
DTC refers to Diagnostic Trouble Code (DTC)
DTCs should be diagnosed in the order they are received.



DTC 327
Exhaust gas recirculation valve sensor circuit below minimum voltage (California models).

KOEO Hard Code Go to DL1
DL1 - Induce DTC 337

KOER Hard Code Go to DL22
DL22 - Check PFE/DPFE Sensor Pressure Input Hose For Blockage

KOEO Memory Code Go to DL90
DL90 - All Continuous Memory EGR DTC: Intermittent Verification

DTC 327
Exhaust gas recirculation valve sensor circuit below minimum voltage (Federal models).

KOEO Hard Code Go to DL1
DL1 - Induce DTC 337

KOER Hard Code Go to DL21
DL21 - Rerun Self-Test w/EGR Vacuum Line Disconnected

KOEO Memory Code Go to DL90
DL90 - All Continuous Memory EGR DTC: Intermittent Verification

DTC 328
Exhaust gas recirculation valve position sensor closed voltage lower than expected.

KOEO Hard Code Go to DN25
DN25 - Check EVP Sensor and EGR Valve Operation

KOER Hard Code Go to DN25
DN25 - Check EVP Sensor and EGR Valve Operation

KOEO Memory Code Go to DN90
DN90 - Check Intermittent Sensor

DTC 332
Insufficient exhaust gas recirculation flow detected.

KOER Hard Code Go to DL30
DL30 - Verify Vacuum Present At EGR Valve

KOEO Memory Code Go to DL90
DL90 - All Continuous Memory EGR DTC: Intermittent Verification

DTC 334
Exhaust gas recirculation valve position sensor closed voltage higher than expected.

KOEO Hard Code Go to DN20
DN20 - Check For DTC 558

KOER Hard Code Go to DN20
DN20 - Check For DTC 558

KOEO Memory Code Go to DN115
DN115 - Check EGR Vacuum w/Engine Running

DTC 335
Exhaust gas recirculation valve pressure sensor voltage higher or lower than expected during KOEO self-test.

KOEO Hard Code Go to DL8
DL8 - Remove Garage Forced Air

DTC 336
Exhaust pressure high, exhaust gas recirculation valve pressure sensor voltage higher than expected (California models).

KOER Hard Code Go to DL50
DL50 - Code 336 or 337: Check For EVR Malfunction

KOEO Memory Code Go to DL90
DL90 - All Continuous Memory EGR DTC: Intermittent Verification

DTC 336
Exhaust pressure high, exhaust gas recirculation valve pressure sensor voltage higher than expected (Federal models).

KOER Hard Code Go to DL25
DL25 - Check Exhaust Restriction

KOEO Memory Code Go to DL90
DL90 - All Continuous Memory EGR DTC: Intermittent Verification