U0399 Jaguar E-type OBD Code

OBD/2 U0399 error code description and symptoms.

EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on.
The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply EGR valve stuck closed EGR valve leaks vacuum EGR flow path restricted EGRVR circuit shorted to PWR VREF open to D.P.F. EGR sensor D.P.F. EGR sensor downstream hose off or plugged EGRVR circuit open to PCM VPWR open to EGRVR solenoid D.P.F. EGR sensor hoses both off D.P.F. EGR sensor hoses reversed Damaged EGR orifice tube Damaged EGRVR solenoid Damaged PCM Perform KOER self-test and look for DTC U0399 as an indication of a hard fault.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

U0399 Jaguar E-type Error Code Repair Process :

If your knock sensor 1 circuit malfunction (bank 1 or single sensor) check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U0399 and engine control unit are in charge of monitoring a bunch of different knock sensor 1 circuit malfunction (bank 1 or single sensor), and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Jaguar E-type U0399 OBD2 Code

A common cause of code U0399 is the failure of Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor), but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Erratic camshaft position due to low oil pressure
Intake air leaks
1Camshaft Position Sensor circuit poor electrical connection

U0399 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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U0399 Jaguar E-type OBD Code

U0399 Jaguar E-type Error Code Repair Process :

Common Causes of Jaguar E-type U0399 OBD2 Code

U0399 code for other Jaguar cars