P1491 DTC For Nissan R391
Nissan R391 Engine Specifications:
| Engine Type : | Multi-Cylinder Engine |
| Cylinder Type : | V-Type Engine |
| Engine Air Intake Process : | Naturally Aspirated |
Your Nissan R391 engine control system detects a problem, the computer stores the diagnostic trouble
code P1491 in its memory.
To figure out what is wrong with your vehicle you must first extract the P1491 DTC For Nissan R391.
To solve P1491 Nissan R391 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
P1491 Nissan R391 DTC Meaning
| P |
Powertrain Code - Problem is related engine, transmission and emissions systems. |
| 1 |
MFG - Manufacturer Specific |
| 4 |
Fuel And Air Metering (Injector Circuit Malfunctions Only) |
| 9 |
TP Sensor Learn Not Complete |
| 1 |
PCM Stack Overrun |
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P1491 Nissan R391 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.
You can also check other Nissan car models :
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The listed Nissan models will give information about P1491 DTC.
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