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2003 lincoln town car code p0705 & p1702 changed tr sensor only when car starts

When car starts get flashing o.d get code p0705 & p1702

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  • Lincoln Master
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You are getting DTC codes for a transmission issue. If I have time, I will look up the codes. Is it shifting funny?

Posted on Apr 17, 2009

  • gerry bissi Apr 17, 2009

    need more info. I looked up your DTC codes & they apply to Lincoln Blackwood.



    Did you get them from a scan test with a scan tool, or from the flashing light.

    What light is flashing? The Overdrive light?

    The Check Engine Light?

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Posted on Jan 02, 2017

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SOURCE: 2003 lincoln town car code p0705 & p1702 changed tr sensor only when car starts

03 Town Car transmission whines & taps on very hot days only, changed fluid filter, trans cooler & radiator. Runs great on cool on days under 90 degress.

Posted on Aug 31, 2009

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I have a lincoln town car 2003 I have this code po113 IAT sensor 1 circuit high input I changed my MAF and it started up but not like it should can someone please help me out


code p 0113 refers to intake air temperature (IAT) sensor --circuit malfunction===causes wiring open circuit / short to positive ---wiring short to ground ---ground wire defective --IAT sensor---ECM
the MAF ( mass air flow) sensor has nothing to do with the fault
the fault is in the wiring or the IAT sensor

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Whats does the code p1702 mean on a 2001 mercury grand Marquis


Possible causes
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- Transmission Range (TR) sensor harness is open or shorted
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Code p0705


code p0705 refers to transmission range(TR)sensor/switch--PRNDL input--circuit malfunction===causes--wiring--TR sensor/switch---ECM/TCM
I would have the TR sensor/switch checked out first and then the TCM module.

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P0705


code p0705 refers to transmission range(TR) sensor/switch--PRNDL input--circuit malfunction===causes--wiring---TR sensor/switch---ECM/TCM

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I have a 2001 Chevy S10 4 cylinder 2.2L Flex Fuel. I am getting readout from most all Auto Parts stores that my codes are directing me to a sensor problem. These most recent codes were C0268, C0223,...


Now what is my problem? We are not magican , an we do not have magical fix's . Testing is the way to a fix . Each DTC - diagnostic trouble code has a diagnostic flow chart or what to test . Buick Electrical Part 3 Automotive Computer Operation 1990

An the auto parts stores just want to sell you a part , just because the code has a sensor name does not mean the part is bad , all sensors have two or three wire's , all coming from the PCM/ECM - engine computer . The electrical circuit could have a open , short to ground , a short to B+ power . The PCM could have a problem . Never change parts without testing . An if that's all you can do , then you need to take it to a qualified repair shop .

DTC C0267 or C0268
Pump Motor Circuit Open/Shorted ABS problem

DTC C0221-C0227
Front Wheel Speed Sensor Circuit ABS problem

DTC U1000 and U1255
Class 2 Communication Malfunction Do you know what class 2 is ?

DTC P0141
HO2S Heater Performance Bank 1 Sensor 2

DTC P0440
Evaporative Emission (EVAP) System

DTC P1632
Theft Deterrent Fuel Disable Signal Received

DTC P0705
Transmission Range (TR) Switch Circuit

The transmission range (TR) switch is part of the park/neutral position and back-up lamp switch assembly and is externally mounted on the transmission manual shaft. The TR switch is a multi-signal switch. The PCM supplies ignition voltage to the TR switch on four signal circuits (A, B, C, and P). Each gear selector lever position grounds one or more of the switch circuits. In order to determine the gear range selected by the driver, the PCM compares the voltage combinations on the signal circuits to a look up table stored in the PCM memory. PCM detects the selected gear range by the state change of the switch input. Refer to Transmission Range Switch Logic table.
Switch input to the PCM is represented on the scan tool as HI and LOW. HI indicates an ignition voltage signal. LOW indicates a zero voltage signal. The four parameters represent transmission range switch signal A, B, C and Parity.
When the PCM detects an invalid TR switch signal combination, then DTC P0705 sets. DTC P0705 is a type C DTC.

From reading your post an my years of experince your best bet would be to take to a qualified repair shop . You do not have the knowlede or tool's to fix these problems .

Install a Scan Tool .
Turn ON the ignition, with the engine OFF.
Select TR Sw. on the Scan Tool .
With the Scan Tool , observe the TR Sw. display while selecting each transmission range: P, R, N, D3, D2 and D1.
Does each selected transmission range match the Scan Tool TR Sw. display?
--
Go to Intermittent Conditions in Engine Controls - 2.2 L
Go to Step 3

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Sounds like either a bad shift solenoid by debris from poor servicing which servicing with new fluid and filter now may fix.even now Or it is an electrical problem in wiring harness or PCM

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Check engine light is on. Is it the PO705 vehicle speed sensor A maken it do that?


Yup, if you scanned your engine computer and you got a code P0705, you can bet that's why your Check Engine light is on.

P0705, however, is NOT a Vehicle Speed Sensor code on this vehicle. It is a Digital Transmission Range Sensor code. It is caused by an open or shorted circuit in the TR-1, TR-2, TR-3a or TR-4 circuits. This code CANNOT be set by an incorrectly adjusted TR Sensor.

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2 Answers

2003 lincoln town car code p0705 & p1702 changed tr sensor only when car starts


03 Town Car transmission whines & taps on very hot days only, changed fluid filter, trans cooler & radiator. Runs great on cool on days under 90 degress.

Apr 23, 2009 | 2003 Lincoln Town Car

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