P1661 Engine Trouble Code
When you check engine light came on code P1661 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P1661 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
When your car's 'P1661 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.
P1661 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||O2 Sensor Heater Circuit Malfunction||Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)||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.
P1661 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1661 engine trouble code is about Glow Plug/Heater Circuit 'A' Malfunction.
Reason For P1661 CodeThe reason of P1661 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.
P1661 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.