errrrrrr p0123 code
12-24-2014, 03:10 PM
#6
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Year: 98
Model: Cherokee
Engine: 4.0
After I looked around for awhile I found several threads about how the clock spring in the stearing wheel can cause tps issues. Now with that being said I noticed that my turn signal and hazard light switch act up some times. So because I read that the clock spring and the tps share the same ground with the computer that maybe the switches might share it to.
12-24-2014, 03:11 PM
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Year: 1999
Model: Cherokee
Engine: 4.0
P0123-THROTTLE POSITION SENSOR VOLTAGE HIGH
When Monitored: With the ignition on and battery voltage above 10.4 volts.
Set Condition: Throttle Position Sensor voltage at the PCM goes above 4.5 volts for 3.2 seconds.
Possible Causes:
Set Condition: Throttle Position Sensor voltage at the PCM goes above 4.5 volts for 3.2 seconds.
Possible Causes:
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
THROTTLE POSITION SENSOR INTERNAL FAILURE
SENSOR GROUND CIRCUIT OPEN
THROTTLE POSITION SENSOR SIGNAL CIRCUIT OPENINTERMITTENT CONDITION
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
THROTTLE POSITION SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
THROTTLE POSITION SENSOR INTERNAL FAILURE
SENSOR GROUND CIRCUIT OPEN
A bad TPS should be suspected. But there could be other problems.
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12-24-2014, 03:15 PM
#8
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Year: 1999
Model: Cherokee
Engine: 4.0
After I looked around for awhile I found several threads about how the clock spring in the stearing wheel can cause tps issues. Now with that being said I noticed that my turn signal and hazard light switch act up some times. So because I read that the clock spring and the tps share the same ground with the computer that maybe the switches might share it to.
12-24-2014, 03:20 PM
#10
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Year: 98
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Sensor is new. Tried to erase code with scanner No luck. Tired to reset ecu by disconnecting the battery and turning the key. No luck
12-24-2014, 03:41 PM
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What exactly is your problem, other than a CEL code?
Any other symptoms, like dead instrument cluster, failure to start, etc.?
Why did you chnge the TPS? Because of the code?
Any other symptoms, like dead instrument cluster, failure to start, etc.?
Why did you chnge the TPS? Because of the code?
12-24-2014, 04:28 PM
#13
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TPS' other than OEM can cause problems, and if the TPS wasn't installed properly. But in your case I think you should try to clear the code using a code reader/scanner, or by removing the battery negative post connector for about five minutes then reconnect. See if the code reappears after driving the Jeep two trips.
12-24-2014, 05:15 PM
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Idles around 500. Idle with surge.p0123 will not erase with scan tool. I replaced the IAC and the tps new battery. Other then the idle the turn signals and hazard light work intermittent.I tried the ecu reset and no luck
12-24-2014, 05:59 PM
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You can check the 5 volt reference voltage supplied to the TPS from the PCM. All the engine management sensors receive this 5 volt supply.
Remove the connector from the TPS. Using a voltmeter, probe the pin cavity of the connector with the Orange wire going to it with the (+) probe and the meter (-) probe to the battery negative post.
Turn the ignition switch to ON (without starting the engine).
You should see 5 Volts +/- .5 volts.
Consider removing the Throttle body to a work bench and remove all the sensors. Then clean the TB. Make sure the orifice where the IAC pintle enters the TB is cleaned out. Be careful cleaning the IAC pintle. Go back on with the TB with a new gasket.
Report back your voltage readings.
Remove the connector from the TPS. Using a voltmeter, probe the pin cavity of the connector with the Orange wire going to it with the (+) probe and the meter (-) probe to the battery negative post.
Turn the ignition switch to ON (without starting the engine).
You should see 5 Volts +/- .5 volts.
Consider removing the Throttle body to a work bench and remove all the sensors. Then clean the TB. Make sure the orifice where the IAC pintle enters the TB is cleaned out. Be careful cleaning the IAC pintle. Go back on with the TB with a new gasket.
Report back your voltage readings.