Good evening,
The 420 is for a catalytic converter. It needs to be replaced.
The 325 is for the knock sensor and the possibilities need to be checked.
The 118 is the coolant sensor. That could be the failure.
Roy
P0325
Descriptor
Knock Sensor #1 Circuit
Probable Causes
Good Trip Counter Equal to Zero
Intermittent Condition
Knock Sensor (KS)
Knock Sensor (KS) 1
Knock Sensor (KS) Circuit Shorted to Ground
Knock Sensor (KS) Circuit Shorted to Voltage
Knock Sensor (KS) Return Circuit Open
Knock Sensor (KS) Signal Circuit Open
Knock Sensor (KS) Signal Circuit Shorted to (K45) Knock Sensor (KS) Return Circuit
Powertrain Control Module (PCM)
P0118
Descriptor
Ect Sensor Voltage Too High
Engine Coolant Temperature Sensor High
Probable Causes
Engine Coolant Temperature (ECT) Sensor
Engine Coolant Temperature (ECT) Sensor Internal Failure
Engine Coolant Temperature (ECT) Sensor Signal Circuit Open
Engine Coolant Temperature (ECT) Sensor Signal Circuit Shorted to Battery Voltage
Engine Coolant Temperature (ECT) Sensor Voltage Above 4.9 Volts
Intermittent Condition
Powertrain Control Module (PCM)
Sensor Ground Circuit Open
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Saturday, August 31st, 2019 AT 5:16 PM