Flash: 3.0L Powertrain Diagnostic And System Enhancements
This bulletin involves reprogramming Powertrain Control Module (PCM) with latest available software. It also involves cleaning or replacement of Exhaust Gas Temperature (EGT) Sensor 1/2 and/or Catalyst Temperature Sensor if necessary depending on Diagnostic Trouble Codes (DTCs) that may have set.
A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) set in PCM memory:
? P1296-00 - EGR Slow Response - Increasing Flow.
? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing Control.
? P20C2-00 - Reductant Heater 3 Control Circuit Performance.
? P1297-00 - EGR Slow Response - Decreasing Flow.
? P0420-00 - Catalyst Efficiency (Bank 1).
? P2237-00 - O2 Sensor 1/1 Pump Cell Current Circuit Open.
? P24D1-00 - Particulate Matter Sensor Regeneration Incomplete.
? U0422-00 - Implausible Data Received From Body Control Module.
? P1E0C-00 - Empty Fuel Tank.
? P2463-00 - Diesel Particulate Filter - Soot Accumulation.
? P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High.
? P2299-00 - Brake Pedal Position/Accelerator Pedal Position Incompatible.
? P208B-00 - Redundant Pump 1 Control Performance.
? P1288-00 - NOX Sensor 1/2 Zero Offset Too High.
? P2002-00 - Diesel Particulate Filter Efficiency Below Threshold.
? P204F - Reductant System Performance.
? P241D-00 - SCR Inducement - Forced Engine Shutdown.
? P20E9 - Reductant Pressure Too High.
Upon further investigation a technician may find following Diagnostic Trouble Code (DTC) set in TCM memory:
? U1424-00 - Implausible Engine Torque Signal Received.
The following enhancements are also included in this software update.
? DTC P0171-00 System Too Lean (Bank 1) has now changed to P026C-00 Fuel Injection Quantity Lower Than Expected.
• DTC P0172-00 System Too Rich
