P1538 Diagnostic Trouble Code Discussion for September 2017
Title: Intake Manifold Runner Control Stuck Open (Bank 2)
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| Help Request | Posted | |
| 2012 Porsche Panamera Turbo S 4.8L reduce engine speed VIN: WP0AB2A71C P1538: fuel cut-off valve -N109- open circuit/short to ground upper limit exceeded. the codes i listed will not clear. during 2 test drives, i never got the reduce engine speed warning. at idle, fuel pressure readings are about 380 kpa - specs according to Alldata are 550 - 580 kpa, so it's a little low of course. we called a friend at the de... |
September 12, 2017 | |
| 2012 Porsche Panamera Turbo S 4.8L reduce engine speed VIN: WP0AB2A71C P1538: fuel cut-off valve -N109- open circuit/short to ground upper limit exceeded. the codes i listed will not clear. during 2 test drives, i never got the reduce engine speed warning. at idle, fuel pressure readings are about 380 kpa - specs according to Alldata are 550 - 580 kpa, so it's a little low of course. we called a friend at the de... |
September 22, 2017 |
