Briggs & Stratton VANGUARD M490000 Repair Manual page 14

DTC P0122 Signal Voltage Low or Open (Scan Diagnostics) -------------------------------------------------------------------- 37
DTC P0122 Signal Voltage Low or Open (Non-Scan Diagnostics) --------------------------------------------------------------38
DTC P0123 Signal Voltage High (Scan Diagnostics) ------------------------------------------------------------------------------- 39
DTC P0123 Signal Voltage High (Non-Scan Diagnostics) -------------------------------------------------------------------------40
DTC P0131/P0132 OXYGEN (HO2) SENSOR -------------------------------------------------------------------------------------------- 41
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 41
2
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 17
DTC P0131 Signal Voltage Low (Scan Diagnostics) --------------------------------------------------------------------------------42
DTC P0131 Signal Voltage Low (Non-Scan Diagnostics) ------------------------------------------------------------------------- 43
DTC P0132 Signal Voltage High (Scan Diagnostics) ------------------------------------------------------------------------------- 44
DTC P0132 Signal Voltage High (Non-Scan Diagnostics) -------------------------------------------------------------------------45
DTC P0174 POWER ENRICHMENT (PE) -------------------------------------------------------------------------------------------------- 46
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 46
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 46
DTC P0174 Lean Fuel Condition (Non-Scan Diagnostics) ------------------------------------------------------------------------ 46
DTC P0201/P0202 CYLINDER 1 OR CYLINDER 2 FUEL INJECTOR --------------------------------------------------------------47
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 47
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 47
DTC P0201 Cylinder 1 Fuel Injector Fault (Non-Scan Diagnostics) -------------------------------------------------------------48
DTC P0202 Cylinder 2 Fuel Injector Fault (Non-Scan Diagnostics) -------------------------------------------------------------50
DTC P0230/P0232 FUEL PUMP FAULT ---------------------------------------------------------------------------------------------------- 52
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 52
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 52
DTC P0230 Signal Voltage Low or Open (Non-Scan Diagnostics) --------------------------------------------------------------53
DTC P0232 Signal Voltage High (Non-Scan Diagnostics) -------------------------------------------------------------------------54
DTC P0336/P0337 CRANKSHAFT POSITION (CKP) SENSOR ----------------------------------------------------------------------55
Modes of Operation -------------------------------------------------------------------------------------------------------------------------- 55
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 55
DTC P0336 Signal Voltage Noisy (Scan Diagnostics) ------------------------------------------------------------------------------56
DTC P0336 Signal Voltage Noisy (Non-Scan Diagnostics) ------------------------------------------------------------------------57
DTC P0337 Signal Voltage Absent (Scan Diagnostics) ---------------------------------------------------------------------------- 58
DTC P0337 Signal Voltage Absent (Non-Scan Diagnostics) ----------------------------------------------------------------------59
DTC P0351/P0352 CYLINDER 1 OR CYLINDER 2 IGNITION COIL FAULT ------------------------------------------------------60
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 60
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 47
DTC P0351 Cylinder 1 Ignition Coil Fault (Non-Scan Diagnostics) ------------------------------------------------------------- 61
DTC P0352 Cylinder 2 Ignition Coil Fault (Non-Scan Diagnostics) ------------------------------------------------------------- 62
DTC P0505 IDLE AIR CONTROL (IAC) MALFUNCTION -------------------------------------------------------------------------------63
Circuit Description ---------------------------------------------------------------------------------------------------------------------------- 63
Diagnostic Aids -------------------------------------------------------------------------------------------------------------------------------- 63
10