Question about 1997 Buick LeSabre
Codes P0705 P0502 P1629.
Already replaced the speed sensor and the Trans position switch(neutral safety). Speedo was intermittent, now it's just inop.
Engine light is on and trans in limp mode.
When the speedo worked, the trans shifted perfect.
I would have the transmission shop check out the transmission.
The transmission may have a soleniod issue.
Posted on Feb 01, 2009
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Posted on Jan 02, 2017
SOURCE: 1995 Buick Lesabre Speedo inop
It may be a faulty speedometer with a short inside, or a short on speedometer wirings or connector.
Whenever car vibration cause the wiring to short, there you lose speedometer and trans functionality.
You need to access the speedometer connector and wirings to
instrument panel to fix this.
Posted on Feb 01, 2009
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The transmission of
a vehicle which has suffered a transmission problem will
send the P0700 code to the vehicle engine control module (ECM)
P0705 Transmission Range Sensor Circuit Malfunction
- Open or short park/neutral position switch circuit
- Poor park/neutral position switch circuit connection
- Misadjusted park/neutral position switch
- Park/neutral position switch may be faulty
P0455. A code p0455 most likely means one or more of the
following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system
P1125 Accelerator Pedal Position (APP) System
P2125 Throttle/Pedal Position Sensor/Switch "E"
P2138 Throttle possition sensor
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