Toyota Fault Code
P0401
Engine Pinging / Hesitation at Cruise
Variant 1
System
Emissions / EGR
Symptom
Engine Pinging / Hesitation at Cruise
Diagnosis, fix steps & Red Seal insights
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Unlock the fix — free accountVariant 2
System
Emissions
Symptom
CEL on; Reduced power; Excessive smoke.
Diagnosis, fix steps & Red Seal insights
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