
1, Sensor 2)
• Faulty HO2S
P0151
HO2S Circuit Low Input (Bank
2, Sensor 1)
• Short to GND between HO2S and ECM
• Faulty front HO2S
P0152
HO2S Circuit High Input (Bank
2, Sensor 1)
• Short to battery between HO2S and ECM
• Faulty front HO2S
P0153
HO2S Circuit Slow Responsive
(Bank 2, Sensor 1)
• Front and rear HO2S connections reversed
• Faulty fuel delivery system
• Leak in intake system
• Leak in exhaust system
• Faulty MAFS ground circuit
• Faulty HO2S
If any misfire, purge solenoid valve, MAFS or HO2S heater
codes are present,do all repairs associated with those codes
before proceeding with this troublearea.
P0154
HO2S Circuit No Activity
Detected (Bank 2, Sensor 1)
• Contaminated, deteriorated or aged HO2S
• Misplaced, bent, loose or corroded connector terminals
• Faulty HO2S
If any misfire, purge solenoid valve or HO2S heater codes are
present, do all repairs associated with those codes before
proceeding this trouble area.
P0050
HO2S Heater Control Circuit
(Bank 2, Sensor 1)
• Contaminated, deteriorated or aged HO2S
• Heater Resistance out of reasonable range
• Misplaced, bent, loose or corroded connector terminals
• Faulty HO2S
P0051
HO2S Heater Circuit Low (Bank
2, Sensor 1)
• Blown or missing HO2S fuse
• Open or short to GND between HO2S and ECM
• Faulty HO2S
P0052
HO2S Heater Circuit High (Bank
2, Sensor 1)
• Short to battery between HO2S and ECM
• Faulty HO2S
P0157
HO2S Circuit Low Input (Bank
2, Sensor 2)
• Short to GND between HO2S and ECM
• Faulty rear HO2S
P0158
HO2S Circuit High Input (Bank
2, Sensor 2)
• Open or short to battery between HO2S and ECM
• Faulty rear HO2S
P0160
HO2S Circuit No Activity
Detected (Bank 2, Sensor 2)
• Contaminated, deteriorated or aged HO2S
• Misplaced, bent, loose or corroded connector terminals
• Faulty HO2S
If any misfire, purge solenoid valve or HO2S heater codes are
present, do all repairs associated with those codes before
proceeding with this trouble area.
Page 7 of 14
24.04.2008
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