Question about 1993 Buick LeSabre

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TPS I checked my "service engine light" and the code gave me TPS.  I researched this and got this answer:  Set the TPS voltage or ohm.  How do I do this with my volt/ohm meter and what is the proper voltage or ohm on the TPS.  (I have a 93 Buick eSabre.) Thanks, Cesare

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Turn on car and use voltmeter on the sensor get the base reading then get a reading with the throttle partly opened and see if it increases or what. it could be faulty, if it is not within spec then get a new one, unplug the batter negative terminal and install new sensor. reconnect everything and you shuold be on your way!

Posted on Feb 06, 2009

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Where is the TPS on the jeep liberty 2.8 crd located


wow no year car, now that is a tuff nut to crack.. huh?
2007 is first year, and is Diesel,,, CRD.
our GAS version, not sure CRD.
first off most these cars are Throttle by wire (system)
and have 4 pots, 2 pedal pots, and 2 throttle body pots
if any do not agree, it goes to limphome. mode,(lost power)

pots means (potentiometers, or variable resistors, that have 3 pins)
when worn they are bad and the PCM goes funky.

it's covered in the FSM book Oem Factory service manual,
read that it covers all tests for TPS to extreme details.
or
login to alldata.com like everyone does. (best of best, IMO)

to diagnose it the tech needs the full set of DTC errors
you never posted.
so........ no answers possible lacking that set of facts.

Mar 18, 2015 | Jeep Liberty Cars & Trucks

1 Answer

P0206 p0113 p0123


P0113 - Intake Air Temperature Circuit High Input
The Powertrain Control Module (PCM) monitors the temperature of the air entering the engine. The PCM supplies a 5 volt reference voltage to the Intake Air Temperature (IAT) sensor. The IAT is a thermistor that varies resistance based on temperature. As the temperature increases, resistance decreases. Low temperature results in a high signal voltage. When the PCM sees a signal voltage higher than 5 volts, it sets this P0113 check engine light code.

There will likely be no symptoms other than illumination of the Malfunction Indicator Lamp (MIL - Check Engine Light / Service Engine Soon).

A code P0113 may mean that one or more of the following has happened:
Internally failed IAT sensor
Faulty connection at IAT sensor
Open in IAT ground circuit or signal circuit
Short to voltage in IAT signal circuit or reference circuit
IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug cables, etc.)
Faulty PCM (less likely but not impossible)


P0123 Code - Throttle Position Sensor/Switch A Circuit High Input
A P0123 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too high a voltage. Some symptoms may include:
Rough idle
High idle
Surging
other symptoms may also be present

A code P0123 may mean that one or more of the following has happened:
TPS not mounted securely
TPS circuit short to ground or another wire
Faulty TPS
Damaged computer (PCM)


P0206 - Cylinder 6 Injector Circuit Malfunction
This means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0206 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM


Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.

Nov 01, 2011 | 2004 Dodge Durango

3 Answers

Autozone hooked the car up to its diagnostic computer it read that the throttle sensor unit was bad...I replaced it then drove it and the check engine light can on. They diagnosed it again and said it was...


Can you send us exactly the OBD Codes - Mercury Diagnostic Trouble Codes that Autozone find there? With this code number could send other details.

Keep in touch.

Sep 28, 2011 | 1998 Mercury Villager

1 Answer

Po123 04 kai


Hello www_ropesmor,

This code P0123 is Throttle position sensor circuit high input.

There four basic reasons for this code.

1. An open or short to ground between the TPS (throttle position sensor) and the ECM (Engine control module).
2. A short to battery voltage between TPS and the ECM.
3. A short between the TPS wires.
4. A faulty TPS.

See below for connector diagrams.

First, with scan tool monitor TPS with throttle closed voltage should be
I f you don't have a scan tool, back probe terminal 1with a volt meter to ground and you will see the voltage as outlined above otherwise follow the steps below.


1.Check to see if there is about 5 volts at the TPS; with engine off key on disconnect the TPS back probe the harness side terminal 3 to ground with a volt meter if there is about 5 volts go to step 2 if about 5 volts if not repair the 5 volt circuit.

2. Probe the harness side terminal 2 to chassis ground with a volt meter, if voltage above .02 repair circuit 2 short to voltage. If voltage is .02 volts or below go to step 3.

3. Probe the harness side terminal 1 to ground with volt meter if below .5 volts go to step 4 if not repair short to battery between TSP harness and ECM connector

4 Turn the ignition off and disconnect the ECM connector . With an ohm meter measure the resistance between the ECM (terminal C18) and TPS ground circuit it should be below 1 ohm. Measure the resistance between the ECM (terminal C8) and TPS signal circuit it should be below 1 ohm. If not repair the open circuit.

After faulty circuit is found and repaired clear code and verify repair.

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I hope this helps.

Regards,

netvan

Aug 15, 2011 | 2004 Kia Optima

1 Answer

P0120 P0220 faults on a 03 Avalanche. First went into reduced power mode. Cleared faults. Truck still will not go over 35 mph. Did not trip the check engine light.


this is an obd2 trouble code table, it can help you understand the meaning of code.
for p0120,
the possible solutions:
If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage. With throttle closed, voltage should be about .45 volts. It should gradually sweep upwards to approximately 4.5 to 5 volts as you depress the throttle. Sometimes only a scope can capture an intermittent glitch in the TPS signal voltage. If you notice a glitch in the TPS sweep voltage, replace the TPS.
NOTE: Some TPS sensors require fine adjustment. If you aren't comfortable with using a DVOM (Digital Volt Ohm meter) to adjust the new TPS, then it's best to take the vehicle to a shop. If the voltage is not .45 volts (+or- .3 volts or so) with the throttle closed or if the reading is "stuck" then unplug the TPS connector. With KOEO check for 5 volts reference voltage present at the connector and a good ground. You can check the signal circuit for continuity by jumping a fused wire between the ground circuit of the TPS connector and the signal circuit. If the TPS reading on the scan tool now reads zero, then replace the TPS. However if that doesn't change the reading to zero, then check for an open or a short on the signal wire and if none is found, suspect a bad PCM. If manipulating the TPS wiring harness causes any change in idle, then suspect bad TPS.

Jul 20, 2011 | Chevrolet Avalanche Cars & Trucks

1 Answer

2004 - JEEP LIBERTY SPORT 3.7/V6 ENGINE LIGHT ON !!! CODE #(P0122) What is it ? Can I fix it ? Dealership fix only ?


P0122 Code - Throttle Position Sensor/Switch A Circuit Low Input

A P0122 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V).

Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.

Symptoms may include:
* Rough or low idle
* Stalling
* Surging
* No/little acceleration
* other symptoms may also be present

Causes: A code P0122 may mean that one or more of the following has happened:
* TPS not mounted securely
* TPS circuit short to ground or another wire
* Faulty TPS
* Damaged computer (PCM)

Possible Solutions: Some recommended troubleshooting and repair steps are:
* Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
* Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
* If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
* If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.


Hope helps (remember to rate this answer).

Mar 01, 2011 | Jeep Liberty Cars & Trucks

1 Answer

The service light came on and i checked the diagnostic code which read P0123


A P0123 code means that the computer has detected that the TPS (throttle position sensor) is reporting too high a voltage.


Symptoms may include:

  • Rough idle
  • High idle
  • Surging
  • other symptoms may also be present

A code P0123 may mean that one or more of the following has happened:

  • TPS not mounted securely
  • TPS circuit short to ground or another wire
  • Faulty TPS
  • Damaged computer (PCM)

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, carefully inspect all wiring and connectors that lead to the TPS. More than likely the problem is with the TPS wiring. Check the voltage at the TPS (refer to a service manual for your vehicle for this specific information). If the voltage spikes or is too high (over 4.65 volts with key on, engine off), then that is indicative of a problem. Carefully trace each wire from the TPS wiring harness to check for breaks, rubbing against other components, etc.

Feb 04, 2011 | Jeep Wrangler Cars & Trucks

1 Answer

How do i check the throttle positioning sensor on an 04 Mitsubishi Endeavor to see if it is bad.Service engine light is on. diagnostic tool wont clear the tps high voltage code. I need to know the process...


YOU NEED A DIAGNOSTIC SCANNER THAT WILL SHOW YOU TPS SENSOR OPERATION.WITH THROTTLE CLOSE TPS SENSOR VOLTAGE OUT PUT 0 AS YOU MOVE THROTTLE OPEN THE TPS SENSOR VOLTAGE SHOULD INCREASE TO 5.0 VOLTS THATS WIDE OPEN THROTTLE.

Mar 08, 2010 | 2004 Mitsubishi Endeavor

3 Answers

2003 jeep wrangler trouble codes p0123, p0121, and p0152. What do they mean? Any help would be appreciated.


A code P0123 may mean that one or more of the following has happened:
  • TPS not mounted securely
  • TPS circuit short to ground or another wire
  • Faulty TPS
  • Damaged computer (PCM)
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, carefully inspect all wiring and connectors that lead to the TPS. More than likely the problem is with the TPS wiring. Check the voltage at the TPS (refer to a service manual for your vehicle for this specific information). If the voltage spikes or is too high (over 4.65 volts with key on, engine off), then that is indicative of a problem. Carefully trace each wire from the TPS wiring harness to check for breaks, rubbing against other components, etc.
A code P0121 may mean that one or more of the following has happened:
  • TPS has intermittent open or short internally
  • Harness is rubbing and causing an open or short in the wiring
  • Bad connection at the TPS
  • Bad PCM (less likely)
  • Water or corrosion in connector or sensor
Possible Solutions 1. If you have access to a scan tool, see what the idle and WOT (wide open throttle) readings are for the TPS. Check if they're close to the specifications mentioned above. If not, then replace the TPS and re-check.
2. Check for an intermittent open or short in the TPS signal. To do that, you can't use a scan tool. You'll need an oscilliscope. The reason is because scan tools take samplings of many different readings over just one or two data lines and can miss an intermittent drop out. Hook up your oscilliscope and watch the signal. It should sweep up and down smoothly with no drop outs or spikes.
3. If no problems were noticed, perform a wiggle test. Do this by wiggling the connector and harness while watching the pattern. Does it drop out? If so, replace TPS and re-check.
4. If you have no TPS signal, check for 5 Volt reference at the connector. If it's present, check the ground circuit for open or shorts.
5. Make sure the signal circuit isn't 12V. It should never have battery voltage. If it does, trace circuit for short to voltage and repair.
6. Look for any water in the connector and replace TPS as necessary.
P0152 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 1)

Feb 16, 2010 | 2003 Jeep Wrangler

3 Answers

Code 16 on a 1990 olds cutlass ciera


Code 16 on my repair manual shows a low voltage to the ECM (computer). Try cleaning the 2 fuse connectors that supplies battery voltage to the ecm. The fuse box is on the front drivers side of the engine compartment. I have the same problem with my car with a intermitten fast idle and check engine light.

Sep 22, 2009 | Cars & Trucks

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