Question about 2004 Chevrolet Silverado 1500 Crew Cab

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Two codes of 1125 - 2004 Chevrolet Silverado 1500 Crew Cab

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This code sets when the indicated o2 sensor rich / lean transitions are less than the specified amount that the pcm wants to see. You need to determine if these sensors are staying lean, (possible vacuum leak,weak fuel pump for example) or rich(faulty map or mass airflow signal, or leaky injector for example) Either code can be a faulty sensor also,but there are many other things to consider before throwing parts at it. Your first challenge , is using the data stream to see what the sensors are telling you, and then to determine what is causing this. This is what drives real mechanics up the wall, people go to the auto parts store, get codes read for free, replace o2 sensors,and it turns out to be a vacuum leak. Believe me, if there was a machine that just told you what's wrong, we would all have one! Let me know if I can help furthur, glad to do it!Good luck!

Posted on Feb 11, 2012


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2004 isuzu rodeo codes P1125, P1295 and P1515 what do they mean ?

no engine stated.
answering for usa rodeo. only. on a usa forum.
it means trouble; the factory manual covers this.
As does mitchells DIY online, read that much>?
those are called DTCs , scan codes. diagnostic trouble codes.
The PCM looks for problems all the time running,
CALLED MONITORS (a sort of nanny)
all cars do this 96 to now, in USA. by law.
If no book or no mitchells try google (or the like)
if you had you'd have seen isuzu examples.

but google finds this in 1 click.

the great (ASE Techs)?
2nd hit.,
P1125 Isuzu Electronic Throttle Control Limit Performance Mode P1221 Isuzu Throttle Position Sensor 1-2 Circuit Performance P1295 Isuzu Electronic Throttle Control Power Management Mode P1515 Isuzu TP Sensor To MAF Sensor Correlation

the first hit said, bad grounds top engine to PCM
and bad harness wires to above same place.
but as all techs, no, bad wires, happen all the time.
as do vast other reasons.
what I do , as the FSM states, clearly
is pick one failure and correct it, and sometimes gets them all.
like blown fuses do, on all vehicles.

1125 means limphome, is in force Low power too.
the TPS is acting up.
the 1515 means in English
that the Throttle angle and air flow dO NOT JIBE.
my jeep books calls that "incongruity": (nicer word)
or they differ. and should not.
i'd be checking the TPS voltages. for correct voltage.
this can fail for wires, rust, and bad sensors.
the word performance means it reads funny. (wrong)

we use a real scan tool and a real volt meter to see what the readings are on these parts.
why not get a real ASE tech to find it.
they know all that electronics magic,
ALL learn that there can be false codes.
one failure can trip many codes, but only one is the fundamental code.

or vacuum leaks cause many errors but not one
states vacuum leaks.

Oct 01, 2016 | 2004 Isuzu Rodeo

1 Answer

What does error code 1125 indicate?

Common CHP Codes and Shorthand - Lost Coast Outpost ...
1097, Arrived on scene. 1098, Assignment completed. 1110, Take a report. 1124, Abandoned vehicle. 1125, Traffic hazard. 1126, Abandoned vehicle, occupied.

Sep 30, 2015 | Cars & Trucks

1 Answer

What is Saab code 1125 &07E8

The code 1125 is your throttle body, when they get dirty or stick they toss up a code. It will need to be replaced or cleaned. On Ford or GM cars we just remove them carefull not allowing dirt or tools to fall in after removing. Get some carb cleaner and clean all the dirt and carbon grime, out of it. be careful not to damage the sensor. Ask shop about cleaner you use not sure about safty on car made in Europe. Put back and things should be ok, If not you will need to replace it. Other code I believe is a junk code. readers seem to be not able to read sub codes unless it is from factory.

Jan 31, 2015 | Saab Cars & Trucks

1 Answer

The car batterys dead so I cannot get my key out of the ignition

use menual charger for full charging & check acid 1125 to 1200cc.
if not it so change your battery brother.

May 28, 2012 | 2006 Chevrolet Cobalt

1 Answer

I have saab 9-3 1.9tid 05 fault code 1125. can anyone tell me what this is?

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
fuel is getting to hot ,this is a renault engine and in the fuel filter is a temperature sensor i think which could be faulty or take the fancy plastic cover off the engine so the air can circulate better

May 19, 2012 | 2008 Saab 9-3

1 Answer

The sunroof leaked and soaked the inside of my 06 equinox .when I started it the next day the reduced engine power & traction control light came on.I scanned it & got P0700 mil along with...



Dec 25, 2010 | 2006 Chevrolet Equinox

1 Answer

2000 isuzu rodeo shuts off when driving is reading codes 1125 and 1299 has been in shop and throttle body was replaced still having same problem as first time before throttle body was replaced. it happens...

A shop will guarantee nothing based on our guess. They need to be able to find the fault and make the recomendation.

If I said you needed a computer at a cost of 600 to 1000 bucks would your really trust my advise and just do it.

I know its hard but this has already been to the shop. They had a birds eye view with all the tools of the trade.
We have nothing to work with here.

Dec 10, 2009 | 2000 Isuzu Rodeo

2 Answers

Cant remove wheel hub

here is procedure

Section 04-01: Suspension and Wheel Hubs, Front 1996 Taurus, Sable Workshop Manual
  1. Raise vehicle on hoist.
  1. Remove wheel and tire assembly. Refer to Section 04-04 .
  1. Remove disc brake caliper (2B120), and front disc brake rotor (1125). Refer to Section 06-03 .
Brake Shoe and Lining Removal
  1. Remove brake master cylinder filler cap (2162). Check fluid level in brake master cylinder reservoir (2K478). Remove brake fluid until brake master cylinder reservoir is half full. Discard removed fluid.
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. Remove wheel and tire assembly from front disc brake rotor mounting face. Use care to avoid damage or interference with disc brake caliper (2B120), front disc brake rotor shield (2K004) or front wheel knuckle (3K185).
  1. Remove rear brake pin retainers (2N386). ( I think it is a T 40 torx bit you need)
  1. NOTE: It is not necessary to disconnect hydraulic connections.

    Lift disc brake caliper from front disc brake caliper anchor plate (2B292) and front disc brake rotor (1125). Do not pry directly against metal caliper piston or damage will occur.
  1. Position disc brake caliper out of the way and support with wire to avoid damaging the disc brake caliper and front brake hose (2078).
  1. Remove outer brake shoe and lining (2001) assembly from front disc brake caliper anchor plate.
  1. Remove inner brake shoe and lining assembly.
  1. Position lug bolt (1107) to clear front wheel knuckle (3K185).
  1. Remove lug bolt from wheel hub (1104).


  1. Install lug bolt into wheel hub.
  1. Using a lug nut (1012), seat wheel hub bolt into wheel hub.
  1. Install front disc brake rotor and disc brake caliper. Refer to Section 06-03 .
  1. Install wheel and tire assembly. Tighten lug nut to 115-142Nm (85-104 lb-ft).

May 25, 2009 | 1996 Mercury Sable

1 Answer

Diagnostic codes

P1226 Control Sleeve Sensor Malfunction
P1126 Throttle Position (Narrow Range) Sensor Circuit Malfunction
P1125 Throttle position sensor intermittent
I would say u are safe to assume the trottle sensor is defective or the wiring to the sensor is open or shorted. check the connector for pushed out pins.

Apr 22, 2009 | 2002 Mini Cooper

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