Multiquip

EXH SYSTEM ERROR PA

UnclassifiedEmissions

What This Code Means

Stage 1 Warning Level 1 (DEF Indicator Flashing, EXH System Error PA displayed); Stage 2 Warning Level 2 (DEF Indicator Flashing, DEF Presvr Inducmt A and EXH System Error PA displayed); Stage 3 Shutdown 1 (Pre-Alarm Lamp ON, Shutdown Lamp ON, DEF Severe Inducmt A and EXH System Error A displayed); Intermittent engine/unit operation; Emergency shutdown activates

Possible Causes

  • •No supply of DEF (Diesel Exhaust Fluid)
  • •Use of poor quality DEF
  • •Problems with DEF dosing
  • •Disconnection of sensors

Suggested Actions

  1. 1Replace the DEF filter located in the urea SCR system supply module every 1,000 hours of operation (Refer to the Isuzu engine owner's manual)

Related Multiquip Fault Codes

EXHAUST SYSTEM ERRFILTER CLEAN REQUESTEDEXH SYSTEM ERROR ALOW DEF SHUTDOWNEESMMAINTENANCE DUEDEF=0% LEVEL SHUTDOWNMAINTENANCE DUE PRE-ALARMDEF<10% TANK LEVELMAINTENANCE INTERVALDEF TANK EMPTY LEVELMAINTENANCE INTERVAL PRE-ALARM
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