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
P0371
Timing Reference High Resolution Signal A Too Many Pulses
Generic
Ignition System
High severity
P0372
Timing Reference High Resolution Signal A Too Few Pulses
Generic
Ignition System
High severity
P0376
Timing Reference High Resolution Signal B Too Many Pulses
Generic
Ignition System
High severity
P0377
Timing Reference High Resolution Signal B Too Few Pulses
Generic
Ignition System
High severity
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