: P0172/P0175 & Hard shifting

09-23-09, 12:39 PM

I have a 2000 Cat, and about a month or so a go I replaced the MAF do to another issue, now I get a P0172 and P0175 and some times it shifts hard not all the time.

any one have any ideas what may be having a problem.

Here is a read out from my OBD reader

=== Stored Error Code(s) ===
Error Code: P0172
Possible Causes:

Error Code: P0175
Possible Causes:

Freeze Frame Information:
1. DTC for which Freeze Frame was Stored - P0172.
2. Fuel System 1 Status - Closed Loop.
3. Fuel System 2 Status - Closed Loop.
4. Calculated LOAD Value - 0.00 %.
5. Engine Coolant Temp - -40.00 F.
6. Short Term Fuel Trim - Bank 1 - -3.13 %.
7. Long Term Fuel Trim - Bank 1 - -10.16 %.
8. Short Term Fuel Trim - Bank 2 - -2.34 %.
9. Long Term Fuel Trim - Bank 2 - -11.72 %.
10. Engine RPM - 0.00 Rpm.
11. Vehicle Speed Sensor - 0.00 Mph.

Monitor Information:

1. MIL - ON.
2. Misfire Monitor - Complete.
3. Fuel System Monitor - Complete.
4. CCM Monitor - Complete.
5. Catalyst Monitor - Complete.
6. Heated Catalyst Monitor - Not Supported.
7. EVAP Monitor - Not Complete.
8. Secondary Air System Monitor - Complete.
9. O2 Sensor Monitor - Complete.
10. O2 Sensor Heater Monitor - Complete.
11. EGR Monitor - Not Supported.
12. NMHC Monitor - Not Supported.
13. Nox Adsorber Monitor - Not Supported.
14. Boost Pressure System Monitor - Not Supported.
15. Exhaust Gas Sensor Monitor - Not Supported.
16. PM Filter Monitor - Not Supported.

Thanks for looking

Jim ...

09-25-09, 01:48 PM
Droped my car off at a local auto shop, He called me and told me my issue has to do with the gas filtter. He is also going to clean my injectors.

Jim ....

Sontov Hijiliak
12-07-09, 09:04 PM
I had a very similar issue with my 1998 catera- (same codes) the engine check light came on too; it would run then die on me a couple times a day- in the summer. I took apart the MAF- put it back together, cleaned the air filter and checked the gas cap. Then, I disconnected the battery- reconnect (to zero out the sys.) then started the car and the light stayed off and the car still runs fine 6mo later. I have no $$$ to put back into this car- I still like it vry much- so I practice a lil tlc and pray. Sontov

12-24-09, 09:25 AM
:confused: I had to replace the MAF a second time, I was told the first one I put in was bad, but the second one when it was on the scaner showed the line was up and down like it had a hart. The other day the light came back on the naxt day the light went off and is still off now that was three days now. The Radio now turns on and off when it want's, and I think my AC is not working.

Jim ....