Question about 1997 Saturn SL

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Codes 1640 1641 1650 1651

1.9L 5 speed I have codes of P1640 1641 1650 n 1651?

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P1640 Driver 1-Input High Voltage

P1641 FC Relay 1 Control Circuit

P1650 Driver 2-Input High Voltage

P1651 Fan 1 Relay Control Circuit

Posted on Feb 10, 2009

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Posted on Jan 02, 2017

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1995 ford f150 truck 302motor what trannsmission did ford install


Hi There,

It should be either a 4R70w or E4OD, check the trans code on the drivers door decal and compare it to this list.

Transmission codes from 1995 Manual M = manual 5 speed overdrive (Mazda?) E = Automatic E40D G = C6 auto U = 4R70W (4spd auto with overdrive) C = manual 5 speed close ratio (Z-F) W = 5 speed H.D. Overdrive Transmission codes start with "TR" then are followed by one of the letters above.

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Replaced bank 1 and bank 2 downstream oxygen sensors on 2004 5 speed automatic diagnostic code still says not working


Try resetting the codes by removing both terminals on the battery for 10 minutes. After the codes should be rest if they do not come back on the sensors are fine.

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Code po734, po735


This is what your codes mean:

Trouble Code-P0734 (A/T Additional Gear Ratio Error In Fourth Gear)


Trouble Code Conditions:
Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 4th Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed.

Possible Causes:

  • Customer may complain of intermittent 4th gear operation
  • O/D and 2/4 pressures less than 75 psi
  • O/D or 2/4 clutch volume indexes out of specification
  • O/D accumulator seals are damaged
  • Transmission enters "limp in" mode running in 4th gear

Trouble Code-P0735 (A/T Gear Ratio Error Fourth Prime)

Trouble Code Conditions:
Vehicle driven any forward Gear, and the TCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio (this test can take up to 5 minutes).

Possible Causes:

  • Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent)
  • Transmission has internal problems or damage present
You have a transmission problem.

Jan 17, 2011 | 2003 Dodge Durango

1 Answer

I have two codes on my 1995 oldsmobile eighty-Eight P1640 P1670 what do they mean.


P1640 Driver 1-Input High Voltage
P1670 Driver 4
have a look here for more codes and info......if this helps, would you leave feedback for me please....thanx
http://www.engine-light-help.com/oldsmobile-check-engine-light.html

Sep 16, 2009 | 1995 Oldsmobile Eighty Eight

1 Answer

Check engine light on code P1640


it means driver 1 input high hope this helps

Oct 19, 2008 | 1995 Oldsmobile 88

1 Answer

1997 Saturn SL1 need to know what these codes mean?


P1640 islow coolant / hot / ATF temperature lamp circuit fault
P1641 is cruise clutch circuit fault low fuel circuit fault ( 1997 - 1999 )
hope that this is what you are looking for and if so I hope that you take the time to rate this response.

Oct 15, 2008 | 1996 Saturn SL

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Codes po174/171 cadillac deville northstar engine


Check for vacuum leaks around the intake. This is the most common cause for these codes.

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