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Posted on Dec 04, 2008
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I have a 2004 jeep wrangler and i am reading the codes p0122 p0123 and p0432 can anyone let me know what these dtc's mean and if possible how to fix what it broken

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Marvin

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  • Jeep Master 85,242 Answers
  • Posted on Dec 04, 2008
Marvin
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P0122 - Throttle Position (TP) Sensor Circuit Low Voltage
P0123 - Throttle Position (TP) Sensor Circuit High Voltage
without checking it 1st I would guess the TPS is most likely defective.
P0432 - Catalyst System Low Efficiency Bank 2, you may have to replace the Catalytic convertor, it may be worn out,
A WORD OF CAUTION: Don't use aftermarket cats, they tend to reset the same code due to compatibility issues, also replace the cat monitor sensor (looks like an O2 sensor) located just to the rear of the bank 2 cat converter.

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  • Contributor 26 Answers
  • Posted on Dec 09, 2014
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I have had to replace 3 throttle pos sensors on my 04 Rubicon.

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I have a 2004 jeep grand Cherokee 4.0 liter California emissions i changed all 4 o2 sensors and codes p0155,p0455,p0432 came back.why is this happening?

You made the classic DIY mistake--replacing whatever part is listed in the trouble code without doing any diagnostic work. P0155 relates the o2 sensor HEATER circuit. That can be caused by an open wire or a blown fuse. Until you fix that, the oxygen sensors won't work properly and that can cause a P0432. First fix the P0155 issue

Then fix the P0455 Evaporative Emission Control System Leak Detected (gross leak) issue. THEN see if the P0432 goes away.
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Thanks for the help !! Dose anyone know what code dOnE mean on a Jeep Wrangler ?

only reference os far is the wrangle has finished reading fault codes

join this free jeep wrangler forum

lots of good help and information there

Jeep Wrangler Forum Jeep Wrangler Owners Community
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What does code p0123 mean

7 posts now, and most are redundant.
i answered both DTC, read the posts. and not repost it.
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Please can you give me the code of TPS of Chevrolet Epica 2004

There are 3 DTC codes related to the TPS....

1. P0121 - Throttle Position (TP) Sensor Performance

2. P0122 - Throttle Position (TP) Sensor Circuit Low Voltage

3. P0123 - Throttle Position (TP) Sensor Circuit High Voltage

If there is any further assistance, please let us know
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2002 Jeep cherokee check engine light on. code p0122 sensor reading 12.5% at idle. does anyone know what it should read at idle?

Throttle/Pedal Position Sensor A Circuit Low Input

This usually means the sensor is unplugged or you have an open circuit. Check the wires to make sure there are no breaks in them.
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Hi my nmae is Curt, I am an ase master tech in GM dealers since 1994. Got a friend with 2003 jeep liberty stalls, won't go over 45 intermittent with codes p0123, p01391, and p0320. Any help on where to...

Not trying to be shrude here but for an ASE certified master mechanic for GM, why don't you just use the codes with the ODBII Scan tool and fix the issue. You have the codes so run with it!
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420 is catalist below threshold bank one.
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Codes

your jeep showed the done message because as im sure you were turning the key on and off to try to start the car this also the method of doing the self check of the diagnostic trouble codes(DTC) and it prompts done when it is finished displaying the DTC's
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