Dodge 2001 Ram 1500 Owner's Manual page 2791

25 - 4 EMISSIONS CONTROL
EMISSIONS CONTROL (Continued)
(M) Malfunction Indicator Lamp (MIL) illuminated during engine operation if this DTC was recorded
(depending if required by CARB and/or EPA). MIL is displayed as an engine icon on instrument panel.
Generic Scan
Tool P-Code
P0155 (M) 2/1 O2 Sensor Heater Failure
P0157 (M) 2/2 O2 Sensor Shorted To Ground
P0158 (M) 2/2 O2 Sensor Shorted To Voltage
P0159 2/2 O2 Sensor Slow Response
P0160 (M) 2/2 O2 Sensor Stays at Center
P0161 (M) 2/2 O2 Sensor Heater Failure
P0168 Decreased Engine Performance Due
To High Injection Pump Fuel Temp
P0171 (M)
P0172 (M)
P0174 (M)
P0175 (M)
P0176 Loss of Flex Fuel Calibration Signal
P0177
P0178 Flex Fuel Sensor Volts Too Low
P0178 Water In Fuel Sensor Voltage Too
P0179 Flex Fuel Sensor Volts Too High
P0181 Fuel Injection Pump Failure
P0182 (M) CNG Temp Sensor Voltage Too Low
P0183 (M) CNG Temp Sensor Voltage Too High
P0201 (M)
P0202 (M)
P0203 (M)
P0204 (M)
P0205 (M)
(G) Generator lamp illuminated
DRB Scan Tool Display
1/1 Fuel System Lean
1/1 Fuel System Rich
2/1 Fuel System Lean
2/1 Fuel System Rich
Water In Fuel
Low
Injector #1 Control Circuit
Injector #2 Control Circuit
Injector #3 Control Circuit
Injector #4 Control Circuit
Injector #5 Control Circuit
Brief Description of DTC
Oxygen sensor heater element malfunction.
Oxygen sensor input voltage maintained below normal
operating range.
Oxygen sensor input voltage maintained above normal
operating range.
Oxygen sensor response slower than minimum required
switching frequency.
Neither rich or lean condition is detected from the oxygen
Oxygen sensor heater element malfunction.
Fuel temperature is above the engine protection limit.
Engine power will be derated.
A lean air/fuel mixture has been indicated by an
abnormally rich correction factor.
A rich air/fuel mixture has been indicated by an
abnormally lean correction factor.
A lean air/fuel mixture has been indicated by an
abnormally rich correction factor.
A rich air/fuel mixture has been indicated by an
abnormally lean correction factor.
No calibration voltage present from flex fuel sensor.
Excess water found in fuel by water-in-fuel sensor.
Flex fuel sensor input below minimum acceptable voltage.
Loss of water-in-fuel circuit or sensor.
Flex fuel sensor input above maximum acceptable
Low power, engine derated, or engine stops.
Compressed natural gas temperature sensor voltage
below acceptable voltage.
Compressed natural gas temperature sensor voltage
above acceptable voltage.
An open or shorted condition detected in control circuit for
injector #1 or the INJ 1 injector bank.
An open or shorted condition detected in control circuit for
injector #2 or the INJ 2 injector bank.
An open or shorted condition detected in control circuit for
injector #3 or the INJ 3 injector bank.
Injector #4 or INJ 4 injector bank output driver stage does
not respond properly to the control signal.
Injector #5 output driver stage does not respond properly
to the control signal.
sensor.
voltage.
BR/BE