TSB 01-022-08
Subject: ROUGH IDLE, LACK OF POWER, AND/OR MIL ON WITH DTC P2177/P2187 (FUEL SYSTEM LEAN)
Bulletin No: 01-022/08
Last Issued: 04/02/2008
Vehicles: 2006-2007 Mazdaspeed6 vehicles
Description: Due to low fuel pressure at the high-pressure fuel pump, some vehicles may experience the following:
- Rough idle, stall, and/or hesitation under cold conditions.
- Intermittent lack of power during acceleration when the engine gets hot.
- MIL turns on with DTC P2177/P2187 (fuel system too lean at off idle).
This is caused by a delayed fuel pressure build-up from the high pressure fuel pump. There are two main reasons for this:
- The drive current from the PCM is not enough for some fuel pumps.
- Some fuel pumps have slower response.
PDF: 01-022-08-1919b.pdf