About: John Ingalls

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Retired military veteran and former Automotive Service Department Manager

Codes by John Ingalls:

P Codes
Trouble Code	Fault Location	Probable Cause
P0159	Heated oxygen sensor (H025) 2, bank 2 -Slow response	Heating inoperative, wiring, H028
P0320	Crankshaft position (CKP) sensor/engine speed (RPM) sensor circuit malfunction	Wiring, CKP/RPM sensor, ECM
P0322	Crankshaft position (CKP) sensor/engine speed (RPM) sensor no signal	Wiring, CKP/RPM sensor, ECM
P0323	Crankshaft position (CKP) sensor/engine speed (RPM) sensor circuit intermittent	Wiring, poor connection, CKP/RPM sensor, ECM
P0404	Exhaust gas recirculation (EGR) system range/performance problem	Hose leak/blockage, wiring, EGR valve/solenoid
P0605	Engine control module (ECM) -ROM error	ECM

P2 Codes
Trouble Code	Fault Location	Probable Cause
P2015	Intake manifold air control actuator position sensor/switch, bank 1 - range/performance problem	Wiring, mechanical fault, intake manifold air control actuator position sensor/switch
P2020	Intake manifold air control actuator position sensor/switch, bank 2 - range/performance problem	Wiring, mechanical fault, intake manifold air control actuator position sensor/switch