LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2007 >> Wrangler X, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0203 To P0420 >> P0325-Knock Sensor 1 Circuit >> Possible Causes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Possible Causes

Possible Causes 
(K42) KS SIGNAL CIRCUIT SHORTED TO VOLTAGE
(K42) KS SIGNAL CIRCUIT OPEN
(K942) KS RETURN CIRCUIT OPEN
(K42) KS SIGNAL CIRCUIT SHORTED TO THE (K942) KS RETURN CIRCUIT
(K42) KS SIGNAL CIRCUIT SHORTED TO GROUND
KNOCK SENSOR
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

scientia non olet · About LEMON Manuals