Your Ledl As engine control system detects a problem, the computer stores the diagnostic trouble
code P1771 in its memory.
To figure out what is wrong with your vehicle you must first extract the P1771 DTC For Ledl As.
On 1999 and later P1771 Ledl As engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.
P1771 Ledl As DTC Meaning
Powertrain Code - Problem is related engine, transmission and emissions systems.
MFG - Manufacturer Specific
Ignition System Or Misfire
Exhaust Gas Recirculation System Valve 1
PCM Stack Overrun
There are currently two main types of cylinder deactivation used today, depending on the type of engine. P1771 Ledl As code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.