B1873 Vauxhall Viscount OBD Code

OBD/2 B1873 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 B1873 as an indication of a hard fault.

Circuit High Input codes like B1873 are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

B1873 Vauxhall Viscount Error Code Repair Process :

For b1873 turn signal / hazard power feed circuit short to ground check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. B1873 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks b1873 turn signal / hazard power feed circuit short to ground with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Vauxhall Viscount B1873 OBD2 Code

A common cause of code B1873 is the failure of B1873 Turn Signal / Hazard Power Feed Circuit Short To Ground, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
Faulty starter motor
Faulty TCM or TCM programming
Faulty Camshaft Position Sensor

B1873 Vauxhall Viscount OBD Code

B1873 Vauxhall Viscount Error Code Repair Process :

Common Causes of Vauxhall Viscount B1873 OBD2 Code

B1873 code for other Vauxhall cars