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1998 Mercedes SLK 230 P0803 Diagnostic: ABV Faulty and 1-4 Upshift Valve Solenoid Circuit Issues

Model: 1998 Mercedes SLK 230 Fault Code: P0803 Posted: 2016-03-06 13:30

Hello, I'm experiencing a P0803 fault code on my 1998 Mercedes SLK 230. The issue shows two related problems: (1) Abnormal Brake Valve (ABV) Faulty and (2) 1-4 Upshift Valve Solenoid Circuit Malfunction. I'm unsure which problem to address first—could someone advise on the priority or recommended troubleshooting steps?

Related fault codes
P0803
Comments (1)
Anonymous 2016-03-07 07:55

The 1-4 Upshift Valve Solenoid Circuit Malfunction should be tested first—check the electrical circuit and solenoid operation. Addressing this issue may resolve or clear the ABV fault code.