# Service bulletin K52535491

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10160169
- Published by NHTSA: 2019\-05\-20
- Manufacturer's number: K52535491
- Manufacturer's date: 2019\-04\-17
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)

## NHTSA's summary

Diagnostic / Troubleshooting Procedures For EGR System Components; Diagnostic Trouble Codes \(DTC\) P0401\-00, P0402\-00, P04DD\-00, P1121\-00, P1121\-98 Or SPN 2659 FMI 16, SPN 2659 FMI 18, SPN 412 FMI 0, SPN 412 FMI 15 \- US10, US10\+OBD13, US14\+OBD\*, US17\+OBD\* With A Variable Geometry Turbocharger \(VGT\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10160169-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10160169-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Exhaust and emissions, EGR valve

## Trouble codes named

P0401, P0402, P04DD, P1121

## Vehicles listed

- 2017 MACK ANTHEM \(AN\)
- 2018 to 2020 MACK ANTHEM \(AN\)
- MACK CHU
- MACK CXU
- 2016 MACK GRANITE \(GR\)
- 2017 to 2020 MACK GRANITE \(GR\)
- MACK GU
- MACK LE
- 2007 to 2017 MACK LEU
- MACK LR
- MACK MR
- 2007 to 2018 MACK MRU
- 2018 to 2020 MACK PINNACLE \(PI/PN\)
- MACK R
- MACK TD
- 2007 to 2016 MACK TERRAPRO \(LEU/MRU\)
- 2017 to 2019 MACK TERRAPRO \(LEU/MRU\)

## Other bulletins for the same vehicles and component

- [K95422063](/bulletins/10141408.md), 2018-06-18, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\); EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Mack Chassis \- Diagnostic Trouble Code \( DTC \) P2459 Lighting The Malfunction Indicator Lamp \( MIL \); Possible Frequent Regeneration Requests \- OBD15 And US14\+OBD16 \(Non\-Common Rail\) Chassis

JSON: [/v1/bulletins/10160169](/v1/bulletins/10160169)

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