Difference between revisions of "16785/P0401/001025"
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When this fault is stored in a 2009-2014 NAR market [[2.0L CR TDI]] (CBEA or CJAA ) VW Jetta/Golf (1K/AJ) | When this fault is stored in a 2009-2014 NAR market [[2.0L CR TDI]] (CBEA or CJAA ) VW Jetta/Golf (1K/AJ) | ||
| − | *Please See TSB 01 14 11 | TPI# 2034898 | + | *Please See TSB 01 14 11(''Updated: 01 14 21'') | TPI# 2034898 |
** May also have fault code stored in ECM | ** May also have fault code stored in ECM | ||
***[[18895/P2463/009315 | 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]] | ***[[18895/P2463/009315 | 18895/P2463/009315 - Diesel Particle Filter: Excessive Soot Accumulation]] | ||
Latest revision as of 11:36, 6 October 2015
16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected
Possible Symptoms
- Malfunction Indicator Light (MIL) ON
- Reduced Exhaust Gas Recirculation (EGR)
- Reduced Power Output/Engine running rough
- Increased Emissions
Possible Causes
- Exhaust Gas Recirculation (EGR) Flow restricted/clogged
- Exhaust Gas Recirculation (EGR) Valve stuck closed/leaking/faulty
- Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve faulty
- Exhaust Gas Recirculation (EGR) System faulty
Possible Solutions
- Check/Clean Exhaust Gas Recirculation (EGR) System
- Check/Replace Exhaust Gas Recirculation (EGR) Valve
- Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve
Special Notes
When this fault is stored in a 2009-2012 NAR market 2.0L CR TDI (CBEA, CJAA, CKRA) VW Jetta/Golf (1K/AJ) or the NMS Passat (A3) chassis:
- Please see: TSB 26-13-03 | TPI# 2031583/3 (formerly know as 26-12-08 | TPI# 2031583). When the Exhaust Pressure Flap Control Module (J883) is faulty, the engine controller may have any of the following DTCs:
- P047F/001151 - Exhaust Pressure Control Valve: Stuck Open
- P0477 - Exhaust Pressure Control Valve "A" Low
- P048A/001162 - Exhaust Pressure Control Valve 1: Stuck Closed
- P048B - Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit
- P048C - Exhaust Pressure Control Valve "A" Position Sensor/Switch Circuit Range/Performance
- 16785/P0401/001025 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected
- Some TDI-CR engines have a filter for the EGR that can become restricted and cause a "Insufficient Flow" code.
When this fault is stored in a 2009-2014 NAR market 2.0L CR TDI (CBEA or CJAA ) VW Jetta/Golf (1K/AJ)
- Please See TSB 01 14 11(Updated: 01 14 21) | TPI# 2034898
- May also have fault code stored in ECM
- Restrictions in the EGR Filter may occur after a regeneration, if the soot loads where high before the regeneration.