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P1237 Diagnostic Trouble Code Discussion for February 2011

Fuel Pump Secondary Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1237
Help Request Posted
2004 Mercury Mountaineer 4.0L No Start VIN: 4M2ZU86K64
P1237: secondary fuel pump circuit fault. ... then dies. r/r fuel pump,, no fuel pressure. r/r frps. still no pressure. i have 12 volts to the pump but no fuel,, so i put in another pump,, still no start,, run koeo,, p1237 comes up,,, any help would be appreciated
February 08, 2011
2004 Mercury Mountaineer 4.0L No Start VIN: 4M2ZU86K64
P1237: secondary fuel pump circuit fault. ... then dies. r/r fuel pump,, no fuel pressure. r/r frps. still no pressure. i have 12 volts to the pump but no fuel,, so i put in another pump,, still no start,, run koeo,, p1237 comes up,,, any help would be appreciated
February 08, 2011