In my 1995 GMC Safari, every time it gets up to opperating temperature, the check enjine light comes on. It is always the Oxygen sensor system code. I have put a different TPS on it and have replaced to oxygen sensor and still every time it gets to 195 degrees and set at a steady speed down the road the light comes on. Once dropped back to an idol light shuts off.
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SAE J2012 Revised DEC2007 lists Diagnostic Test Code (DTC)P0133 as "O2 Sensor Circuit Slow Response Bank 1 Sensor 1"
This code basically means that the upstream oxygen sensor on bank one of your engine is not responding as quickly as it should to changes in oxygen leavels in the exhaust.
The usual causes of this is an oxygen sensor that is just plain worn out (if it has a lot of miles on it) or an oxygen sensor that is contaminated by engine oil or antifreeze leaks causing these fluids to be burned in the exhaust (like bad piston rings, defective PCV valve, blown head gasket, etc.).
In any case, the oxygen sensor needs to be replaced. However it should be noted that if it is caused by contamination like that described above, replacing it will only result in a new oxygen sensor doing the same thing if the cause of the contamination is not repaired.
Hi Greg: On1995 GMC Truck Sonoma 4WD 4.3L TBI 6cylthe Oxygen Sensor is located under hood, driver side, lower engine area mounted in lower exhaust manifold at pipe flange.
Fig.: Removing the oxygen sensor from the exhaust pipe
The sensor uses a permanently attached pigtail and connector. This
pigtail should not be removed from the sensor. Damage or removal of the
pigtail or connector could affect the proper operation of the sensor.
Keep the electrical connector and louvered end of the sensor clean and
free of grease. NEVER use cleaning solvents of any type on the sensor!
The oxygen sensor may be difficult to remove when the temperature of the
engine is below 120?F (49?C). Excessive force may damage the threads in
the exhaust manifold or exhaust pipe.
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Hi, I'm not sure what those codes stand for or what part(s) the codes are referring to but a local parts store in your area should be able to look it up and tell you. My experience with checks engine lights coming on have always been because of the oxygen sensor. Good luck if you haven't found your problem already.
look 214 is not a valid code for a 1995 escort, this is an OBD1 system. here is a list of trouble codes for this year of ford no matter the model.
You should find the diagnostic connector under your hood normally by the fender on the battery side. By just using your test light and a jumper wire, it will tell you what kind of problem you got.
KEY ON ENGINE OFF (KOEO) TEST Model years 1984-1995 all models of Ford 1. Make sure engine is fully warmed. If in doubt, run engine at 2000 rpm for 2 minutes. 2. Turn ignition off and wait 10 seconds for system to shut off. Make sure A/C is off and transmission is in Park (automatic) or Neutral (manual). 3. Hook up light and jumper (or a tester if you have one). Turn key to ON (do not start engine). Read the codes.
How to do it?
Example code 23: your test light should flash 2 long consecutive flashes followed by 3 short pulses.
Ford's common codes for OBD1 (vehicles made before 1995)
11 system pass 12 idle control fault 13 dc motor did not move 14 engine rpm signal fault or PIP circuit failure 15 eec processor or power to KAM interrupted 16 rpm to low to check oxygen sensor test or fuel control error 17 cfi fuel control system fault or rich/lean condition indicated 18 ignition diagnostic monitor (IDM) circuit failure 19 cylinder identification (CID) sensor input failure 21 engine coolant temperature (ECT) out of self-test range 22 manifold absolute pressure (MAP) sensor circuit out of range 23 throttle positioner sensor out of self-test range 24 air charge temperature (ACT) sensor out of self-test range 25 knock not sensed during dynamic response test 26 transmission fluid temperature out of self-test range 28 loss of primary tach, right side 29 insufficient input from vehicle speed sensor 31 egr positioner sensor below minimum voltage 32 egr positioner sensor below closed limit 33 throttle positioner sensor noisy/harsh on line 34 egr valve circuit out of self-test range 35 egr valve circuit above maximum voltage 38 idle track switch circuit open 39 axod torque converter or bypass clutch not applying properly 41 oxygen sensor circuit indicates system always lean 42 oxygen sensor circuit indicates system always rich 43 oxygen sensor out of self-test range 44 air injection control system failure 45 coil 1 primary circuit failure 46 coil primary circuit failure 47 4X4 switch is closed or oxygen sensor failure 48 coil primary circuit failure 49 electronic transmission shift error 51 engine coolant temperature sensor circuit open 52 power steering pressure switch circuit open 53 throttle position circuit above maximum voltage 54 air charge temperature circuit open 55 key power input to processor open circuit 56 mass air flow circuit above maximum voltage 57 axod circuit failure 58 idle tracking switch circuit fault 59 automatic transmission shift error 61 engine coolant temperature circuit grounded 62 converter clutch error 63 throttle positioner circuit below minimum voltage 64 air charge temperature circuit grounded 65 charging system over voltage 66 mass air flow sensor circuit below minimum voltage 67 neutral/drive switch circuit open 68 transmission fluid temperature over temperature range 69 transmission shift error 70 data circuit communication link circuit failure 71 message center circuit circuit failure 72 insufficient manifold absolute pressure (MAP) change during dynamic response test 73 insufficient throttle positioner (TPS) change during dynamic response test 74 brake on/off (BOO) circuit open 75 brake on/off (BOO) circuit closed 76 insufficient air flow output change during test 77 brief wide open throttle not sensed during test 78 power interrupt detected 79 a/c on/defrost on during self test 81 map has not changed normally 82 super charger bypass circuit failure 83 OIC-low speed fuel pump relay circuit failure 84 egr vacuum regulator (EVR) circuit failure 85 canister purge circuit failure 86 shift solenoid circuit failure 87 fuel pump circuit failure 88 electro drive fan circuit failure 89 transmission solenoid circuit failure 91 no oxygen sensor switching detected 92 shift solenoid circuit failure 93 throttle positioner sensor input low 94 torque converter clutch solenoid circuit failure 95 fuel pump secondary circuit failure 96 fuel pump secondary circuit failure 97 transmission indicator circuit failure 98 electronic pressure control circuit failure 99 eec has not learned to control idle
P1133 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1 I would have the repair shop see if they either damaged or left disconnected the oxygen sensor for engine cylinder bank one upstream sensor, this sensor would have been disconnected if the oil pan was removed.
The VCM has the capability to monitor this process by using the Heated
Oxygen Sensor (HO2S Bank 1, Sensor 2). The HO2S (Bank 1, Sensor 2), located
in the exhaust stream before the catalytic converter, produces an output signal
which indicates the storage capacity of the catalyst; this in turn indicates
the catalysts ability to convert the exhaust emissions effectively. If the
catalyst is functioning properly, the HO2S signal will be far less active
than the signal produced by the Heated Oxygen Sensor (Bank 1, Sensor 1).
When the HO2S temperature measures below 360°C (600°F), the
sensor will not produce any voltage and will behave like an open circuit.
This will result in an Open Loop operation.
The HO2S heater provides for a faster sensor warm-up which allows the
sensor to become active in a shorter period of time and remain active during
long extended idle. The DTC P0141 determines if the HO2S is functioning properly
by checking the response time of the sensor. This DTC is a type B DTC.
Just a thought, have you checked yout TPS(throttle position sensor)? I had similar problems with my 89 GMC Jimmy 4.3l, however a code 44 is strange. Also check to see if your problems go away if you advance the timing a few degree's.