P1271 - Cylinder 1 High To Low Side Open
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P1271 - CYLINDER 1 HIGH TO LOW SIDE OPEN
| Description: | Indicates a high voltage condition exists at the injector output of the NG module for cylinder No. 1 when low voltage is expected. | ||
| Possible Causes: |
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| Diagnostic Aids: | PID Data Monitor INJ1F fault flags = YES. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to HA: Natural Gas Fuel Control STEP 27 |