Question about 2003 Jeep Grand Cherokee Limited

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Code 0161 02s heater ckt malfunction

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If the computer is the correct part number its either the o2 senser or the heater wire is broken where it comes out of the computer test the wire first by checking the risestance from the computer to the o2 senser

Posted on Nov 19, 2013

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My 1998 cad. seville sls reads check underbody , do not exceed 90 mpr, what could be wrong ?

When the RTD detects that a suspension related malfunction desist and the PCM has received a class 2 message to limit vehicle speed. The PCM sends a class 2 serial data message to the IPC requesting that this message is displayed.

Real Time Damping

Your best bet , take it to the cadillac dealer
DTC C1326 Battery Out of Range
DTC C1650 RSS Control Module Fault
DTC C1658 RSS Control Module Calibration Fault
DTC C1710 LF Damper Actuator Short CKT to Battery
DTC C1711 LF Damper Actuator Short CKT to Ground
DTC C1712 LF Damper Actuator Open CKT
DTC C1715 RF Damper Actuator Short CKT to Battery
DTC C1716 RF Damper Actuator Short CKT to Ground
DTC C1717 RF Damper Actuator Open CKT
DTC C1720 LR Damper Actuator Short CKT to Battery
DTC C1721 LR Damper Actuator Short CKT to Ground
DTC C1722 LR Damper Actuator Open CKT
DTC C1725 RR Damper Actuator Short CKT to Battery
DTC C1726 RR Damper Actuator Short CKT to Ground
DTC C1727 RR Damper Actuator Open CKT

Aug 10, 2017 | Cars & Trucks

2 Answers

I trouble with P0106, P0442, P0455

code p 0106 refers to manifold absolute pressure(MAP) sensor / barometric pressure (BARO) sensor---range /performance problem===causes --intake exhaust leak---wiring---MAP sensor---BARO sensor
code p 442 refers to evaporative emission(EVAP) system--small leak detected===causes --hose connections ---intake leak---EVAP cannister purge valve
it also refers to EVAP system ---large leak detected ---cap loose/ off ===causes --mechanical fault , hose connection EVAP pressure sensor
code p 0455 refers to EVAP system --large leak detected ===causes same as for p 0442 causes

Jul 07, 2016 | Plymouth Grand Voyager Cars & Trucks

1 Answer

P0155 Sensor heater ckt - CKT malfunction bank 2 sensor 1

Sensor one is in the exhaust manifold, in this case, on cylinder head bank 2 which is cylinder head near the radiator

Oct 07, 2014 | 2000 Toyota Sienna

1 Answer

Diag code P0339

P0339 is Crankshaft Position Sensor A CKT Intermittent
P0335 is Crankshaft Position Sensor A CKT Malfunction

Feb 27, 2012 | 2005 Dodge Ram 1500

1 Answer

1998 ford ranger 4x4 4.0l 6cylinder automatic does

My friend this sounds like a catalytic converter problem. A number one symptom in the case of a "burned up" catalyst is loss of power or as you put it bogged down. Try disconnecting at the flange if not too much trouble or simply remove the O2 sensor downstream and see if pressure changes (old trick)

Jul 09, 2011 | 1998 Ford Ranger SuperCab

1 Answer

02 sensor heater circut malfunction

htr ckt malfunctions are mostly due to worn or faulty htr elements in ur sensor. i would first chek all ur fuses to make sure u even have voltage going down to ur o2 sensr, if they check out good then safe to say ur o2 sensr is faulty an should b replaced....good luck

May 01, 2011 | 2003 GMC Sonoma Extended Cab

1 Answer

Mazda 626 1999 model. These problems was noticed

unplug the postive side of battery then plug back by reseting the brain you can by pass most of them all because its reading what use to be problems.

Feb 22, 2011 | 1999 Mazda 626

2 Answers

I have a 99 cadillac deville and had it put on the machine to get it tested..the codes came back as P0147, P1377, P1323, and P0146. can someone please tell me what these codes mean.

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
The PCM provides a 0.45 volt reference to the oxygen sensor on CKT 1668. When the Oxygen Sensor reaches operating temperature it will generate a counter voltage that will vary based on the amount of oxygen in the exhaust. The post-converter heated oxygen sensor is located in the exhaust after the catalytic converter. A lean exhaust will generate a low voltage and cause the 0.45 reference to move lower. A rich exhaust will generate a high voltage and cause the 0.45 reference to move higher. If the oxygen sensor cannot respond under the test conditions and generate a voltage greater than 0.609 volt or less than 0.307 volt, it will set a DTC P0146. Possible causes of DTC P0146 are:
  • Open in CKT 1668 or 1669.
  • Short to voltage on CKT 1668 or 1669.
  • Oxygen sensor that malfunctions.
  • An ineffective oxygen sensor heater.
  • A poor HO2S ground.

P0147 :O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
This diagnostic test is used to determine if the heating element in the post-converter oxygen sensor is operating properly. An oxygen sensor acts as a battery because it creates its own voltage once it reaches operating temperature. This voltage is produced when the oxygen content in the exhaust stream is different than that in the atmosphere. The heating element is energized through CKT 139 when the ignition is ON and allows the oxygen sensor to reach operating temperature quickly. This in turn allows the PCM to enter Closed Loop fuel control quicker. When cold the voltage that the PCM measures on the HO2S HI and LOW inputs is called bias voltage. If it takes too long for the HO2S to vary above or below the bias voltage within a specific time since key ON DTC P0147 will set

P1323:IC 24X Referance Circut Low Frequency
The Ignition Control Module creates a 4X signal and a 24X signal that is used by the PCM for ignition and fuel control. In this diagnostic test, the PCM checks for 4X reference pulses being received without 24X reference pulses. When the engine is running and the PCM is receiving 4X reference pulses without 24X reference pulses and the 24X reference signal line is low for 4 seconds, DTC P1323 is set.

P01377:IC Cam Pulse To 4X Referance
This diagnostic test checks to see if there are eight 4X reference pulses between CAM signals. Do not attempt diagnosis or repair unless the customer is experiencing driveability problems associated with this DTC.

Hope this helps!

Mar 08, 2010 | 1999 Cadillac DeVille

1 Answer

Had local part store pull code. O2S heater CKT malfunction 1/1

This fault indicates a problem in the oxygen sensor heater circuit, bank 1 sensor 1.
Your vehicle is equiped with four oxygen sensors total. Two upstream and two after the catalytic conveter that monitor emissions and converter effeciency. The front sensor on the left (drivers side) bank requires replacement. The heaters are used to bring the sensor up to operating temperature sooner.

Feb 25, 2010 | 2002 Toyota Tundra

1 Answer

2001 corolla chack engine light on.

P0440= Evap Control Sys Malfunction
P0441= Evap Control Sys Purge Flow Fault
P0446= Evap Control Sys Vent Ckt Malfunction

Mar 30, 2009 | 2001 Toyota Corolla

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