bigd Posted April 18, 2004 Report Share Posted April 18, 2004 My wife drives a 1997 sls and has been complaining about hard starting and loss of power. I retrieved the codes and was surprised at how many there were. codes: po138, po404, po603, po533, p1810 any help would be appreciated Link to comment Share on other sites More sharing options...
PAUL T Posted April 18, 2004 Report Share Posted April 18, 2004 P0138 - Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 2 P0404 - Exhaust Gas Recirculation (EGR) Open Position Performance - EGR Valve probably needs cleaned, it will cause the poor performance. P0603 - Control Module Long Term Memory Reset - Battery was probably unhooked. P0533 - Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit High Voltage P1810 - TPC Valve Position Switch Circuit Maybe someone else will interperate the others for you. Link to comment Share on other sites More sharing options...
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