OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P1442
Leakage Diagnostic Pump Control Circuit Signal Low
BMW
Auxiliary Emissions Control
Medium severity
P1444
Diagnostic Module Tank Leakage Pump Control Open Circuit
BMW
Auxiliary Emissions Control
Medium severity
P1445
Diagnostic Module Tank Leakage Pump Control Circuit Signal Low
BMW
Auxiliary Emissions Control
Medium severity
P1447
Diagnostic Module Tank Leakage Pump Too High During Switching
BMW
Auxiliary Emissions Control
Medium severity
P1448
Diagnostic Module Tank Leakage Pump Too Low During Switching
BMW
Auxiliary Emissions Control
Medium severity
P1451
Diagnostic Module Tank Leakage Switching Solenoid Control Circuit Signal Low
BMW
Auxiliary Emissions Control
Medium severity
P1453
Secondary Air Injection Pump Relay Control Circuit Electrical
BMW
Auxiliary Emissions Control
Medium severity
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