B1873 Porsche Boxster OBD Code

OBD/2 B1873 error code description and symptoms.

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

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 Porsche Boxster 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.

Difficulty Level (Easy)

Repair Time (45 Min.)

Cost Prediction : $ 25-45

Common Causes of Porsche Boxster 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 ;

• Dirty Oil
• Damaged VCT phaser
• Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
• Ignition coils harness is open or shorted

B1873 is a kind of Body Trouble Code Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

B1873 code for other Porsche cars

You can view according B1873 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• B1873 Porsche 1300
• B1873 Porsche 3400
• B1873 Porsche 356
• B1873 Porsche 550
• B1873 Porsche 718
• B1873 Porsche 804
• B1873 Porsche 901
• B1873 Porsche 904
• B1873 Porsche 906
• B1873 Porsche 907
• B1873 Porsche 908
• B1873 Porsche 910
• B1873 Porsche 911
• B1873 Porsche 911 Type 991
• B1873 Porsche 911 Type 996
• B1873 Porsche 911 Type 997
• B1873 Porsche 912
• B1873 Porsche 914
• B1873 Porsche 917
• B1873 Porsche 924
• B1873 Porsche 928
• B1873 Porsche 930
• B1873 Porsche 931
• B1873 Porsche 935
• B1873 Porsche 936
• B1873 Porsche 937
• B1873 Porsche 944
• B1873 Porsche 959
• B1873 Porsche 962
• B1873 Porsche 964
• B1873 Porsche 965
• B1873 Porsche 968
• B1873 Porsche 986
• B1873 Porsche 993
• B1873 Porsche 996
• B1873 Porsche Boxster Type 981
• B1873 Porsche Boxster Type 986
• B1873 Porsche Boxster Type 987
• B1873 Porsche Carrera Gt
• B1873 Porsche Cayenne
• B1873 Porsche Cayenne Type 92a
• B1873 Porsche Cayenne Type 9pa
• B1873 Porsche Cayman
• B1873 Porsche Cayman Type 718
• B1873 Porsche Cayman Type 981
• B1873 Porsche Cayman Type 987
• B1873 Porsche Coupe
• B1873 Porsche Dp
• B1873 Porsche Gt
• B1873 Porsche Gt2
• B1873 Porsche Gt3
• B1873 Porsche Karisma
• B1873 Porsche Kremer
• B1873 Porsche Macan Type 95b
• B1873 Porsche Mega
• B1873 Porsche Panamera Type 970
• B1873 Porsche Panamericana
• B1873 Porsche Rsk
• B1873 Porsche Tapiro

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