What does the Audi fault code P310B mean?

1 Answers
ElliottDella
07/30/25 1:48am
Audi fault code P310B indicates the following: Low-pressure fuel pressure sensor malfunction or communication failure. Below is relevant information about fault code P310B: 1. Solution: Measure the low-pressure fuel pressure with a fuel pressure gauge. First, replace the fuel filter. If the fault persists, replace the fuel pump. 2. Cause of the fault: Low fuel pressure regulation, fuel pressure exceeding specifications. The fuel pressure regulator is clogged or damaged. 3. Reasons for the fault code generation: The meaning of this automotive fault code is that under closed-loop conditions, the air-fuel ratio adjustment exceeds the upper limit. Issues such as air intake system leaks, insufficient fuel pressure, poor cylinder performance, inaccurate air flow meter data, injector damage, or ignition system malfunctions may all trigger this fault code.
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