P1666 Mitsubishi Se-ro Diagnostic Trouble Code
P1666 Mitsubishi Se-ro code definition:
P1666 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code for Mitsubishi Se-ro.
P1666 Mitsubishi Se-ro is defined as Knock Sensor Circuit Range Performance (Bank 1 or Single Sensor). This refers to camshaft timing, which in this case is over-retarded. The spark should have a light tan color. If the sensor probe comes with white and chalky parts, this means it has been lagging between switching phases, and should be replaced.
Symptoms
Symptoms of a P1666 Mitsubishi Se-ro diagnostic trouble code may include:
- Misfire
- Misfire
- The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
- Reduction in engine performance, especially at low RPM levels
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Possible Causes :
- Dirty air cleaner element Damaged DPF
- A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
- An air leak forward of the DPF will change the sensor readings resulting in the code
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Common Misdiagnoses
- Exhaust Gas Recirculation System Valve 1 Problem
- BBV Sensor Circuit Low Voltage Problem
- Transmission Engaged At High Throttle Angle Problem
- Cruise Inhibit Control Circuit Problem
- TFP Valve Position Switch-Drive Without Drive Ratio Problem
Repair Processes :
Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.
Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.
Process Tips
Diagnostic trouble code P1666 Mitsubishi Se-ro is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.
Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P1666 Mitsubishi Se-ro.
Fortunately, P1666 Mitsubishi Se-ro is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.
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