1. DTC P042F description
The ECM controls the opening position of the EGR valve based on the driving condition of the engine by controlling the EGR motor. The EGR valve lift amount is detected by the position sensor and is sent to the ECM. If the ECM detects a difference between the actual EGR valve position and the desired EGR valve position for a predetermined period of time with the EGR commanded ON, the DTC is set.
2. Condition for setting DTC P042F
Condition for running the DTC
- The battery voltage is 9 to 16 V.
- The ignition voltage is 9 to 16 V.
- The ignition switch is ON.
- The desired EGR valve opening position is 20% or more.
- DTCs P0112, P0113, P0116, P0117, P0118, P0490, P060B, P0651, P1655, P2227, P2228, P2229, and U0001 are not set.
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0112 (Flash Code 22) Intake Air Temperature Sensor Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0113 (Flash Code 22) Intake Air Temperature Sensor Circuit High".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0116 (Flash Code 23) Engine Coolant Temperature Sensor Circuit Range/Performance".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0117 (Flash Code 23) Engine Coolant Temperature Sensor Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0118 (Flash Code 23) Engine Coolant Temperature Sensor Circuit High".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0490 (Flash Code 44) EGR Valve DC Motor Short to Battery".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P060B (Flash Code 36) Internal Control Module A/D Processing Performance".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0651 (Flash Code 56) Sensor Reference Voltage 2 Circuit".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P1655 (Flash Code 59) Sensor Reference Voltage 4 Circuit".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P2227 (Flash Code 71) Barometric Pressure Circuit Range/Performance".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P2228 (Flash Code 71) Barometric Pressure Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P2229 (Flash Code 71) Barometric Pressure Circuit High".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC U0001 (Flash Code 84) High Speed CAN Communication Bus".
Condition for setting the DTC
- The ECM detects that the difference between the actual EGR valve opening position and the desired valve opening position is the predetermined value or more for 10 seconds.
3. Action taken when DTC P042F sets
- Euro4: The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type A (Euro4).
- Except Euro4: The ECM illuminates the check engine warning light. Refer to Action taken when DTC sets - Type A (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".
- The ECM limits the fuel injection quantity.
- The ECM inhibits pre-injection.
- The ECM limits the fuel rail pressure.
- The ECM inhibits the cruise control.
4. Condition for clearing DTC P042F
- Euro4: Refer to Condition for clearing the MIL/DTC - Type A or Type B (Euro4).
- Except Euro4: Refer to Condition for clearing the check engine warning light/DTC - Type A or Type B (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".