Engine / trans elec fault

[onion]

Hi, Omega 2.2 CD petrol, automatic, 03 reg.

I am experiencing the following issue:

When car being driven (any conditions), engine / transmission electronic fault warning indicator on dash (car symbol with spanner) sometimes comes on and engine goes into safety mode.  Usually the warning indicator can be re set by turning the ignition off and back on, but occasionally the fault warning indicator can only be re set by attaching a diagnostic reader.

This has been happening over a period of several weeks, initially only on the occasional journey but recently has become much more frequent (almost every journey).

Diagnostic reader gives the following fault code readings:
P1700 power train transmission control module
P1555  power train electronic variable orifice output

(engine runs as normal and auto box changes up and down smoothly, no obvious signs of any mechanical or electrical fault).

Just wondered whether anybody has experienced this before and / or has any indication what might be the cause ?  Any help or advice would be very much appreciated. Thanks.

[05omegav6]

Being a 2.2 auto it is probably the cam sensor playing up. Best acquired from an actual vauxhall dealer that you actually have to go to. Lots of rubbish sensors readily available from the usual places such as ebay/motor factors.

It might be summat else, and I am sure others will advise accordingly... but my money is as above

[RobG]

Hi, Omega 2.2 CD petrol, automatic, 03 reg.

I am experiencing the following issue:

When car being driven (any conditions), engine / transmission electronic fault warning indicator on dash (car symbol with spanner) sometimes comes on and engine goes into safety mode.  Usually the warning indicator can be re set by turning the ignition off and back on, but occasionally the fault warning indicator can only be re set by attaching a diagnostic reader.

This has been happening over a period of several weeks, initially only on the occasional journey but recently has become much more frequent (almost every journey).

Diagnostic reader gives the following fault code readings:
P1700 power train transmission control module
P1555  power train electronic variable orifice output

(engine runs as normal and auto box changes up and down smoothly, no obvious signs of any mechanical or electrical fault).

Just wondered whether anybody has experienced this before and / or has any indication what might be the cause ?  Any help or advice would be very much appreciated. Thanks.

Nope. Throttle Position Sensor (TPS) Load Signal not Plausible with Engine Load

[TheBoy]

What codes were in the TCM?

[Lazydocker]

Where in Suffolk are you?

[onion]

  Hi, away at weekend !, thanks to all who have replied to my post so far:

  Harris K Telemacher  -  my last 4 cars have all been Vauxhalls (2 x Omega, 2 x Cavalier), all except current car have
  had to replace cam sensor, so this is certainly worth considering.

  RobG  -  re your post TPS, would a fix be to replace the Throttle Position Sensor, or does the Throttle Body itself require
  further attention ?

  The Boy  -  are you able to advise location of Transmission Control Module on 2.2 petrol, auto, 2003 reg ?

  Lazydocker  - based in Bury St Edmunds, work in Ipswich.


  Thanks again for advice. 





 

[TheBoy]

Given your proximity to Ipswich, might be worth a little visit to Lazydocker if he's willing to have a gander

[Lazydocker]

Given your proximity to Ipswich, might be worth a little visit to Lazydocker if he's willing to have a gander

That was my thoughts, although pretty busy at the moment - one of the guys is just about to become a daddy! Drop me a PM and we can try to sort something. I need to try and get my diagnostic stuff working on the new laptop or steal the wife's!

Should add, I'm not as experienced with a 4 pot but still know a bit and should be able to sort some data out 

[TheBoy]

Aye, crippleback, grab data and post up if not obvious, if OP can get to you

[onion]

Any help is really appreciated, Lazydocker sounds like you are a busy person, I run another car as well so no rush.

If you do find time to have a look, please let me know and we can perhaps arrange something when convenient.

I work in engineering (not cars!) so have a bit of technical knowledge.  Obtained a basic diagnostic  ECU reader from internet, which produced the codes stated.  But don't have special diagnostic reader needed for Transmission control module.

[Lazydocker]

Any help is really appreciated, Lazydocker sounds like you are a busy person, I run another car as well so no rush.

If you do find time to have a look, please let me know and we can perhaps arrange something when convenient.

I work in engineering (not cars!) so have a bit of technical knowledge.  Obtained a basic diagnostic  ECU reader from internet, which produced the codes stated.  But don't have special diagnostic reader needed for Transmission control module.

I'll fire you a PM. Reply to it with a number and we can try to sort something out

[Lazydocker]

TPS Fault looks on the money... TPS readings are going from Idle, to partial load to not viable. Plus a TPS historical code.

[TheBoy]

TPS Fault looks on the money... TPS readings are going from Idle, to partial load to not viable. Plus a TPS historical code.

How did the voltages look on the TPS?

What was MAF doing - or was you getting this with engine not running?

[Lazydocker]

TPS Fault looks on the money... TPS readings are going from Idle, to partial load to not viable. Plus a TPS historical code.

How did the voltages look on the TPS?

What was MAF doing - or was you getting this with engine not running?

Everything looked normal except the TPS Position.

[Lazydocker]

To add, I do have some live data (I think) but that involves me finding it on my laptop

Typically, it behaved fine when I saw it