Question about MSA Altair 4 Multigas Detectors - 10085989

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Low oxygen alarm all the time reads fresh air at .8

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Your oxygen sensor is unfortunately dead. You need to find an install a new one. You can get one here for fairly cheap: MSA Altair 4 Oxygen O2 Sensor .

I don't have a video on how to install the sensor yet, but if you need me to I can walk you through over the phone. Send me an email



Posted on Sep 29, 2014


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Check fluids and filters, make sure there is no restriction on tubing, air intake. some times take out the filters etc. then reinstalling them will help. Also unplug for a while then plug it back in and see where that takes you.

Apr 22, 2014 | AirSep FreeStyle Portable Oxygen...

1 Answer

Harley engine codes

P0107 Map Sensor Open/Low
P0108 Map Sensor High
P0117 ET Sensor Low
P0118 ET Sensor High
P0112I AT Voltage Low
P0113I AT Voltage Open/High
P0120 TPS1 Range Error
P0220 TPS2 Range Error
P0122 TPS1 Low
P0123 TPS2 High/Open
P0131 Front Oxygen Sensor Low
P0132 Front Oxygen Sensor High
P0151 Rear Oxygen Sensor Low
P0152 Rear Oxygen Sensor High
P0154 Rear Oxygen Sensor Inactive.
P0222 TPS2 Low
P0223 TPS2 High/Open
P0261 Front Injector Open/Low
P0263 Rear Injector Open/Low
P0262 Front Injector High
P0264 Rear Injector High
P0373 CKP Sensor Intermittent
P0374 CKP Sensor Synch Error
P0444 Purge Solenoid Open/Low
P0445 Purge Solenoid High
P0562 Battery Voltage Low
P0563 Battery Voltage High
P0501 VSS Sensor Low
P0502 VSS Sensor High/Open
P0572 Brake Switch Low
P0577 Cruise Control Input High
P0603 ECM EEPROM Memory Error
P0605 ECM FLASH Memory Error
P06415 V+Vref 1 Out Of Range
P06515 V+Vref 2 Out Of Range
P1001 System Relay Coil Open/Low
P1002 System Relay Coil High/Shorted
P1003 System relay contacts open
P1004 System Relay Contacts Closed
P1009 Incorrect Password
P1010 Missing Password
P1270 TGS Validation Error
P1351 Front Ignition Coil Driver Open/Low
P1352 Front Ignition Coil Driver High/Shorted
P1353 Front Cylinder No Combustion
P1354 Rear Ignition Coil Driver Open/Low
P1355 Rear Ignition Coil Driver High/Shorted
P1356 Rear Cylinder No Combustion
P1357 Front Cylinder Combustion Intermittent
P1358 Rear Cylinder Combustion Intermittent
P1475 Exhaust Actuation Position Error
P1477 Exhaust Actuator Open/Low
P1478 Exhaust Actuator Shorted/High
P1501 Jiffy Stand Sensor Low
P1502 Jiffy Stand Sensor High P1510 EFI Limited
Performance Mode
P1511 EFI Power Management Mode
P1512 EFI Forced Idle Mode
P1514 Air Flow Fault
P1600 EFI Module Processor Internal Error
P2100 EFI Motor Circuit Open
P2101 EFI Motor Circuit Range Performance (Actuation
P2102 EFI Motor Circuit Low
P2103 EFI Motor Circuit High
P2105 EFI Forced engine shutdown
P2107 EFI Module Processor Internal Fault
P2119 EFI Motor Throttle Body Range Performance
P2122 TGS1 Low/Open
P2123 TGS1 High
P2127 TGS2 Low/Open
P2128 TGS2 High
P2135 TPS Correlation Error
P2138 TGS Correlation Error (Twist grip sensor)
P2176 EFI Closed Position Not Learned
U Codes
U1016 Loss of ECM ****** Data
U1064 Loss of TSM/FSFM ****** Data to ECM
U1097 Loss of Speedometer ****** Data to ECM
U1255 ****** Data Error
U1300 ****** Data Low
U1301 ****** Data High
Harley Davidson 2008 DTC Code Reading (draft)
Harley Davidson DTC Codes - Unofficial Guide Page 3
B Codes
B0563 Battery Voltage High.
B1121(TSM) Left Turn Output Fault
B1121(HFSM) Left Turn Output Open
B1122(TSM) Right Turn Output Fault
B1122(HFSM) Right Turn Output Open
B1123(HFSM) Left Turn Output Short to Ground
B1124(HFSM) Right Turn Output Short to Ground
B1125(HFSM) Left Turn Output Short to Battery
B1126(HFSM) Right Turn Output Short to Battery
B1131(HFSM) Alarm Output Low
B1132(HFSM) Alarm Output High
B1134 Starter Output High
B1135 Accelerometer Failed
B1136(HFSM) Accelerometer Tip Test Error
B1141(TSM) Ignition Switch Low/Open
B1141(HFSM) Ignition Switch Low/Open
B1142 Smart Security System Internal Fault
B1143(HFSM) Security Antenna Short to Ground
B1144(HFSM) Security Antenna Short to Battery
B1145(HFSM) Security Antenna Open
B1151 Bank Angle Sensor(BAS) Short to Ground
B1152 Bank Angle Sensor(BAS) Short to Battery
B1153 Bank Angle Sensor(BAS) High
B1154 Clutch Switch Input Short to Ground
B1155 Neutral Switch Input Short to Battery

Apr 11, 2014 | 2007 Harley Davidson FLHRC Road King...

1 Answer

2002 toyota avalon engine check light on P0078 and P007C

P0050 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 1)

P0051 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 1)

P0052 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 1)

P0053 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 1)

P0054 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 2)

P0055 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 3)

P0056 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 2)

P0057 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 2)

P0058 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 2)

P0059 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 1)

P0060 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 2)

P0061 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 3)

P0062 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 3)

P0063 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 3)

P0064 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 3)

P0065 Air Assisted Injector -Range/Performance

P0066 Air Assisted Injector -Circuit Malfunction or Circuit Low

P0067 Air Assisted Injector -Circuit High

P0068 (MAP) Manifold Absolute Pressure /(MAF) Mass Air Flow - Throttle Position


P0069 (MAP) Manifold Absolute Pressure / (BARO)Barometric Pressure Correlation

P0070 Ambient/Outside Air Temperature Sensor -Circuit Malfunction

P0071 Ambient/Outside Air Temperature Sensor -Range/Performance Problem

P0072 Ambient/Outside Air Temperature Sensor -Circuit Low Input

P0073 Ambient/Outside Air Temperature Sensor -Circuit High Input

P0074 Ambient/Outside Air Temperature Sensor -Circuit Intermittent

P0075 Intake Valve Control Solenoid Circuit Malfunction (Bank 1)

P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077 Intake Valve Control Solenoid Circuit High (Bank 1)

P0078 Exhaust Valve Control Solenoid Circuit Malfunction (Bank 1)

P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081 Intake valve Control Solenoid Circuit Malfunction (Bank 2)

P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit Malfunction (Bank 2)

Mar 22, 2013 | 2002 Toyota Avalon

1 Answer

After about 15 min the yellow light comes on but no alarm low oxy

Check that air intake and exhaust are not blocked. Check air intake filter, if dirty clean with mild dish detergent. Have filter completely dry before inatalling it and using the concentrator.

Apr 25, 2012 | DeVilbiss 525 Oxygen Concentrator

2 Answers

Check Engine light with Po131 o2 circuit low voltage sensor 1 bank 1 reading, what does that mean?

- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Front Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Replacing the O2 Sensor 1 usually takes care of the problem

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

Feb 07, 2012 | 2004 Honda Odyssey

1 Answer

Idles rough and low intermittently. Stalls occaisionally. Error code P1137 pulled off of the computer. 2001 Alero, 2.4L Automatic trans

P1137 is HO2S Bank 1 Sensor 2 Lean Or Low Voltage. Oxygen sensor is reading a "lean condition". This code probably is stored from the rough and low idling. So it sounds like you maybe having other issues causing this P1137 code to come up. For lean conditions read this:
1. Vacuum leaks - check for failed or loose vacuum lines, leaking intake gaskets, intake air tubes loose or any other source of un-metered air leaks (leaks after the Mass Air Flow Sensor)
2. Restricted fuel filter or bent/pinched fuel system lines
3. Incorrect input from other sensors, such as the Mass Air Flow Sensor/cam or crank sensors, which may not always drop a separate code
4. Engine misfire ? Yes I know this one may seem weird. You might think that if there is a misfire then you will have all that unburned fuel and it should read rich; right? Well the O2 sensors read only oxygen content in the exhaust, so if you have all that unburned fuel from incomplete combustion then, you guessed it, you also have all that unburned oxygen. High O2 content in exhaust equals a lean reading!

Sep 07, 2011 | Oldsmobile Alero Cars & Trucks

3 Answers

What would cause this vehicle to use execessive gas.

1) dirty air filter

2) vacuum leak

3) false reading from mass air flow sensor

4) false reading from coolant temperature sensor

5) improper tires inflation

6) topping off gas when fill-up (soaking emission lines with fuel)

7) Positive Crankcase Ventilation (PCV) and breather element clogging

8) Exhaust Gas Recirculation(EGR) Valve stuck with carbon and EGR passage tube is block with carbon.

9) low or dirty transmission fluid + filter (if it's an automatic)

10) excessive load

Nov 04, 2009 | 1995 Toyota Corolla

2 Answers

What causes high co percentage in emission test

Measured in percent, this is the result of incomplete combustion. In other words, the fuel mixture has been compressed and ignited, but could not complete the combustion process due to the lack of oxygen. This failure is always mixture or ignition timing related. The ideal reading for CO is 0%. A normal reading for CO is usually around .25 to .75% with 1.2% being the failure mark in most areas for vehicles 1984 and newer. Earlier cars are allowed higher readings. Any car equipped with an Oxygen sensor will try to run under 1.0% as measured before the Catalytic converter (use that test connection for set-up). A vehicle with a CAT, O2 sensor, and an AIR system (Air Injection Reaction) will read almost 0% with everything working properly.

Oct 06, 2009 | 1983 Chevrolet Silverado

1 Answer

Both front power windows stopped working

hope this helps. if u have any other questions just let me know


Fuse locations for options not shown can be found in the corresponding wiring diagrams.

1 - Headlight, Low Beam, Left (56b) 10
2 - Headlight, Low Beam, Right (56b) 10
3 - License Plate Lights (5icon_cool.gif 10
4 - Rear Window Wiper And Washer System 15
5 - Windshield Wiper/Washer 15
6 - Fresh Air Blower, A/C (X) 20
7 - Tail Lights, Right (58R) 10
8 - Tail Lights, Left (58L) 10
9 - Rear Window Defogger 20
10 - Fog Lights 15
11 - Headlight, High Beam, Left (56a) 10
12 - Headlight, High Beam, Right (56a) 10
13 - Horn (15) 10
14 - Back-Up Lights 10
15 - Engine Electronics (15) 10
16 - Power Sunroof, Front Map/Reading Light 15
17 - Emergency Flashers (15) 10
18 - Fuel Pump (FP), Heated Oxygen Sensor (HO2S)
Control Module 20
19 - Coolant Fan, A/C Relay (30) 30
20 - Brake Lights (30) 10
21 - Interior Lights, Clock, Luggage Compartment
Light (30) 15
22 - Cigarette Lighter, Radio, Luggage Compartment
Release 10

Separate Fuses

(Located above the relays)

- Fuse for ABS hydraulic pump relay 30
- Fuse for ABS main relay 30
- Fuse for A/C 30
- Fuse for power windows 20
- Fuse for cruise control 5
- Fuse for cigarette lighter 15

May 20, 2009 | 1997 Volkswagen Jetta

1 Answer

Obd code 141

The Engine Control Module (ECM) uses oxygen sensor signals to maintain the air fuel mixture at the ratio resulting in optimum fuel economy and reduced emissions. The amount of oxygen in the exhaust gases indicates, to the front oxygen sensor, whether the air fuel mixture being supplied to the engine cylinders is rich or lean. The readings of the rear oxygen sensor are used to indicate the efficiency of the catalytic converter. The ECM calculates catalytic convener efficiency by comparing the rear oxygen sensor signal to the front oxygen sensor signal.

A normal oxygen sensor signal will constantly fluctuate above and below 500 mV , with the front oxygen sensor signal frequency of at least 5 Hz at 2500 RPM . Due to the effect of the catalytic converter, the rear oxygen sensor signal frequency will be lower than the front oxygen sensor signal frequency. If the rear oxygen sensor signal coincides with the front oxygen sensor signal a large percentage of the time, this indicates a loss in efficiency of the catalytic converter or a malfunction within the fuel system.

After the engine runs for 2 minutes , the ECM checks the rear oxygen sensor heater circuit. If during two driving cycles the rear oxygen sensor's heater resistance is less than 4.6 Ohms or greater than 19.5 Ohms , the ECM will set P0141 and MIL will turn on. This code indicates an unusually high or low heater circuit resistance reading by the rear oxygen sensor or ECM.
If you find this information to be helpful please give me a fixya! rating Thank you ,Randy
If you need any further assistance please contact me by fixya or at

Aug 18, 2008 | Hyundai Elantra Cars & Trucks

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