2005 Hummer H2 SUV Logo
mitch Posted on Jun 06, 2016
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ENGINE LIGHT ON CODES P0141 & P0144

ENGINE MISFIRING

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Bill Boyd

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  • Hummer Master 53,816 Answers
  • Posted on Jun 07, 2016
Bill Boyd
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Code p 0141 refers to heated oxygen sensor (HO2S) 2 bank 1--heater control--circuit malfunction===causes --wiring---HO2S--- ECM
code p 0144 refers to heated oxygen sensor(HO2S) 3 bank 1--high voltage ===causes wiring short to positive ---HO2S---ECM
also refers to oxygen sensor(O2S) 3 bank 1--high voltage ===causes wiring short to positive---O2S-- ECM
HO2S sensors are the units in the exhaust manifolds or before the cat converters
O2 sensors are after the cat converter
two completely different operations
use the special tool for sensors as the wires are easily damaged from the wrong tool use
as for misfiring you will get a P0300 (0300,0301,0302,0303 etc) depending on which cylinders are misfiring
when checking for misfiring the injectors , (blocked or not firing) are as important as plugs and wires
If the misfiring continues after sensor replacement , replace the ECM with a known good one as it is common to all fault codes and misfiring

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1999 Honda CRV. What do these codes mean P1399 and P0141.

The OBD-II error code P1399 and P0141 for a Honda CRV 1999 are as follows:
P1399 - This code indicates that there is a problem with the misfire detection system in the vehicle. This code is often accompanied by other codes that indicate which specific cylinder is misfiring. Causes of this code could include a faulty ignition system, a clogged fuel injector, or a problem with the engine control module (ECM).
P0141 - This code indicates a malfunction in the oxygen sensor located on Bank 1, Sensor 2. This sensor measures the oxygen content in the exhaust gas after it has passed through the catalytic converter. Causes of this code could include a faulty sensor, a damaged sensor wiring harness, or a problem with the vehicle's computer.
It is recommended that you have a certified mechanic diagnose and repair these issues to ensure proper operation of your vehicle.
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2007 ford escape V6, replaced sensor forP0141 code persists, need diagram for the 02 sensor harness to PCM to check damaged wires had a alternator replaced before i purchased it, maybe a wire got cut

No code tells you to replace a part , need to do diagnostic's for said code .
P0141 - O2 Heater Circuit (Bank 1, Sensor 2) Description: See the description for DTC P0135. Possible Causes: See the possible causes for DTC P0135. Diagnostic Aids: See the diagnostic aids for DTC P0135. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test DW .
DW: Heated Oxygen Sensor (HO2S) DW: Introduction DW1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) Are DTCs P0040, P0041, P0053, P0054, P0055, P0059, P0060, P0132, P0133, P0135, P0138, P0139, P0141, P0144, P0147, P0152, P0153, P0155, P0158, P0159, P0161, or P1127 present?
Yes No For DTCs P0040 or P0041, GO to DW2 .

For DTCs P0053, P0054, P0055, P0059 or P0060, GO to DW14 .

For DTCs P0132, P0138, P0144, P0152 or P0158, GO to DW20 .

For DTCs P0133 or P0153, GO to DW3 .

For DTCs P0135, P0139, P0141, P0147, P0155, P0159 or P0161, GO to DW9 .

For DTC P1127, GO to DW19 . For all others, GO to Section 4, Diagnostic Trouble Code (DTC) Charts and Descriptions .
DW9 DTCS P0135, P0139, P0141, P0147, P0155, P0159 OR P0161: CHECK FOR A SOURCE OF POTENTIAL HO2S CONTAMINATION
  • Investigate the following items as potential sources of HO2S contamination:
    • use of unapproved silicon sealers
    • fuel contaminated by silicon additives
    • excessive oil consumption
    • glycol leaking internally in the engine
    • lead-contaminated fuel
    • short drive cycles in cold weather
    • use of unapproved cleaning agents
Is a concern present?
Yes No REPAIR the source of the contamination.

CHANGE the engine oil and oil filter.

RESET the keep alive memory (KAM). REFER to Section 2, Resetting The Keep Alive Memory (KAM) .

REPEAT the self-test. GO to DW10 .
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P0141 p0036 p0054 pontiac

Check your fuse and replace any that are burnt out. It is possible that it your heater on your O2 sensor shorted that it blew the fuse.
1helpful
1answer

Code p0036,p0141,p0140

In order to get the light out you will have to replace the rear O2 sensor.
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2answers

What does the codes p0442,p0136 &p0141 mean on my 2001 ford taurus it failed inspection for these codes

P0442 FORD - Evaporative Emission System Leak Detected Small Leak

Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
P0136 - O2 Sensor Circuit Malfunction Bank 1 Sensor 2
Possible causes- Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Rear Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

P0141 FORD - O2 Heater Circuit Bank 1 Sensor 2

Possible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
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1answer

I have Nissan Altima 2001 running 93500 K. since last a week service engine soon light on and showing P0141 & 0325 codes. What is the fix for P0141 and P0325 error codes.

p0325 = bank 1 sensor 2 oxygen sensor p0141 = knock sensor
if it were me you could watch the sensor on a scanner to see if working properly but without a scanner i'd replace the oxygen sensor bank 1 = passenger side
sensor 2 is sensor behind the catalictic converter screwed in

good luck
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3answers

Reccieved P0141, P0147, P0340 as emission diagnostic trouble codes. What do these mean?

P0141....O2 Sensor Heater Circuit (Bank 1 Sensor 2)

P0142....O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)

P0143....O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

P0144....O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

P0145....O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)

P0146....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

P0147....O2 Sensor Heater Circuit (Bank 1 Sensor 3)

P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

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