U1340 Buick Reatta OBD Code

OBD/2 U1340 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 U1340 as an indication of a hard fault.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code U1340, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code U1340 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

U1340 Buick Reatta Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U1340 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If servo motor potentiometer foot circuit open so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the servo motor potentiometer foot circuit open.

Common Causes of Buick Reatta U1340 OBD2 Code

A common cause of code U1340 is the failure of Servo Motor Potentiometer Foot Circuit Open, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Damaged camshaft position (CMP) sensor
Intake Valve Timing Control Solenoid Valve harness is open or shorted
Faulty oil control valve (OCV)

U1340 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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U1340 Buick Reatta OBD Code

U1340 Buick Reatta Error Code Repair Process :

Common Causes of Buick Reatta U1340 OBD2 Code

U1340 code for other Buick cars