P3491 Engine Trouble Code
When you check engine light came on code P3491 the reason should be . However your vehicle's manufacturer may have a different definition for the P3491 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
When your car's 'P3491 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.
P3491 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Ignition System Or Misfire||Fuel Temperature Sensor B Circuit Range/Performance||Cylinder 4 Contribution/Balance Fault||Glow Plug/Heater Circuit 'A' Malfunction|
The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.
P3491 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP3491 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.
Reason For P3491 CodeThe reason of P3491 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.
P3491 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.