Check engine light on my jeep 07 [Archive] - Cherokee SRT8 Forum

: Check engine light on my jeep 07


Budapestboy
06-06-2010, 09:06 AM
Hello i get this code P013A does anyone know what it is and what i need to buy to fix this ?

ekaz
06-06-2010, 09:12 AM
A P0713 is a transmission temp sensor error. Couldn't find P0713a though

Budapestboy
06-06-2010, 09:14 AM
I Gave up wrong code first it is P013A and i think its an o2 sensor can anyone tell how to fix this is?Is it possible to clean the sensor or do i have to replace it? Can someone tell me what sensor it is?

Budapestboy
06-06-2010, 03:26 PM
Is there anyone with the same problem or have some ideas??

Taillight Solutions
06-06-2010, 03:41 PM
Here you go. Direct from the service manual for a 2008 so it should be the same. My guess is you have an exhaust leak (like I had) or a bad O2 sensor.


P013A-O2 SENSOR 1/2 SLOW RESPONSE - RICH TO LEAN







For a complete wiring diagram Refer to Section 8W.

Theory of Operation


The downstream O2 Sensor is located in the exhaust path behind the catalytic converter, is monitored for proper response to assure optimum catalytic converter efficiency. The downstream O2 response monitor is intended to diagnose a downstream O2 sensor that is not moving or stuck in a voltage window and to insure accurate information for catalyst monitor diagnosis.

When Monitored:
With the engine running, vehicle speed above 96 kph (60 mph), throttle open for a minimum of 120 seconds, ECT greater than 70° C (158° F), catalytic converter temperature greater than 600° C (1112° F), and downstream oxygen sensor in a rich state. During a decel fuel shutoff event, the downstream oxygen sensor should switch from rich to lean within a specific time.

Set Condition:
The PCM monitors the downstream O2 sensor. If the PCM does not detect a rich to lean switch within a specific time during a decel fuel shutoff event, the monitor will fail. One trip fault. Three good trips to turn off the MIL.


Possible Causes

EXHAUST LEAK

(K141) O2 1/2 SIGNAL CIRCUIT

(K904) O2 RETURN DOWNSTREAM CIRCUIT

1/2 O2 SENSOR



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Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).




Diagnostic Test
1. ACTIVE DTC
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NOTE: Check for contaminants that may have damaged the O2 Sensor: contaminated fuel, unapproved silicone, oil and coolant.

NOTE: After the repairs have been made, verify proper O2 Sensor operation. If all the O2 Sensor voltage readings have not returned to normal, follow the diagnostic procedure for the remaining O2 Sensors.


Start the engine.
Allow the engine to reach normal operating temperature.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.


With a scan tool, select View DTCs.

NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.



Is the DTC Active or Pending at this time?

Yes

Go To 2


No

Refer to the INTERMITTENT CONDITION Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

2. CHECKING THE EXHAUST SYSTEM FOR LEAKS
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Turn the ignition off.
Raise the vehicle in accordance with the Service Information.

WARNING: The normal operating temperature of the exhaust system is very high. Never work around or attempt to service any part of the exhaust system until it has cooled. Special care should be taken when working near the catalytic converter. The temperature of the converter rises to a high level after a short period of engine operating time


Connect Exhaust Cone #8404-EC or #8404-EC to Air Pressure Regulator (with hose) #W-18-MIL-1146AS.

CAUTION: The air pressure must not exceed 27.6 kPa (4 psi), otherwise engine damage can occur.


Attach shop air to the air pressure regulator.
Adjust the Air Pressure Regulator to 27.6 kPa (4 psi)
Insert the exhaust cone into the vehicle tail pipe.
If the vehicle is equipped with dual exhaust. Use the #8404-ECT with equipped attached plug, plug one side of the dual exhaust pipe. Pressurize the other as described above.
Apply MoparŪ Air Leak Detector PN# 05191804AA (or an equivalent leak finder liquid) to the following areas:
- All welded joints from the exhaust manifold to 152.4 mm (6 inches) behind the downstream O2 sensor
- O2 sensor seal points
- O2 sensor boss welds
- Flange/joint connection(s)
- Exhaust manifold to cylinder head connection(s)
- EGR solenoid gasket base and tube seal points (if equipped)
Watch for the liquid/soapy water to bubble.
Use the following definitions to help determine if system or component repair/replacement is necessary:
Type 1 Leak is defined as a leak where very small foam like bubbles 1 mm (0.04 of an inch) or less appear.
Any Type 1 or greater leaks found in welded joints, O2 sensor seal points or O2 sensor boss welds must be repaired or the component must be replaced.
Type 2 Leak is defined as a leak where larger bubbles pea size, 8 mm (0.3 of an inch) or greater appear.
Any Type 2 or greater leaks found in flange or joint connections, exhaust manifold to cylinder head connections, or EGR gasket and tube seal points must be repaired or the components must be replaced

Leak Location
Repair required if results at 27.6 kPa (4 psi) reveal bubble size:

Welded joints
Type 1, 1 mm (0.04 of an inch) or greater

O2 Sensor seal points
Type 1, 1 mm (0.04 of an inch) or greater

O2 Sensor boss welds
Type 1, 1 mm (0.04 of an inch) or greater

Flange / joint connections
Type 2, 8 mm (0.3 of an inch) or greater

Exhaust Manifold to cylinder head connections
Type 2, 8 mm (0.3 of an inch) or greater

EGR gasket and tube seal points
Type 2, 8 mm (0.3 of an inch) or greater



If a leak is found that matches the above definition, repair or replace the component as necessary.
Once the repair is complete, repeat the procedure to verify that all leaks have been repaired.

Were any exhaust leaks found?

Yes

Repair or replace the leaking exhaust parts as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE).


No

Go To 3

3. (K141) O2 1/2 SIGNAL CIRCUIT
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Turn the ignition off
Disconnect the 1/2 O2 Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K141) O2 1/2 Signal circuit in the O2 Sensor harness connector.

Is the voltage between 4.1 and 5.0 volts?

Yes

Go To 4


No

Check the (K141) O2 1/2 Signal circuit for a short to ground, open, or short to voltage. If OK, replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE).

4. (K904) O2 RETURN DOWNSTREAM CIRCUIT
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Measure the voltage on the (K904) O2 Return Downstream circuit in the 1/2 O2 Sensor harness connector.

Is the voltage at 2.5 volts?

Yes

Go To 5


No

Check the (K904) O2 Return Downstream circuit for a short to ground, open, or short to voltage. If OK, replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE).

5. O2 SENSOR
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NOTE: Check for signs of contaminants that may have damaged the O2 Sensor, such as contaminated fuel, unapproved silicone, oil and coolant.


Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the 1/2 Oxygen Sensor and the Powertrain Control Module (PCM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes

Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE.)


No

Replace the 1/2 Oxygen Sensor in accordance with the Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE.)

DXJ
06-06-2010, 03:44 PM
Beat me to it. :)
DO you have any exhaust mods?

Budapestboy
06-06-2010, 03:47 PM
No its completely stock!!

Where should i buy the O2 sensor if that is damaged? Any good on Bosh?

Is the O2 sensor same in 5.7 and 6.1?? anyone??

Budapestboy
06-07-2010, 06:11 AM
how do i find out what O2 sensor is damaged ?? There are 4 i believe.

ekaz
06-07-2010, 06:52 AM
P013A-O2 SENSOR 1/2 SLOW RESPONSE - RICH TO LEAN

The 1/2 indicates bank 1, 2nd sensor, so drivers side and the one after the catalytic converter.

Budapestboy
06-07-2010, 09:01 AM
Thanks for that im gonna replace it today is there any chance to clean these sensor or do i have to buy new one?P013A-O2 SENSOR 1/2 SLOW RESPONSE - RICH TO LEAN

The 1/2 indicates bank 1, 2nd sensor, so drivers side and the one after the catalytic converter.

ekaz
06-07-2010, 10:16 AM
Thanks for that im gonna replace it today is there any chance to clean these sensor or do i have to buy new one?

you can try cleaning it, won't hurt anything to try that first

cyanideg
06-16-2010, 06:01 PM
Mine just came on too and has the same error code. I have a Borla exhaust on mine though, with CMR tune with pred. Should I take it to the muff shop 1st and see if they find any leaks or should I take it to the dealer?

Budapestboy
06-16-2010, 06:04 PM
I did change this one

P013A-O2 SENSOR 1/2 SLOW RESPONSE - RICH TO LEAN

The 1/2 indicates bank 1, 2nd sensor, so drivers side and the one after the catalytic converter.

And the light never came back problem fixed!!

Mine just came on too and has the same error code. I have a Borla exhaust on mine though, with CMR tune with pred. Should I take it to the muff shop 1st and see if they find any leaks or should I take it to the dealer?

cyanideg
06-18-2010, 12:58 PM
Well I had that code...I scheduled an appt with the dealer, then before bringing it in I set my PCM back to stock with predator. Then check engine light went away. They couldnt bring up and trouble codes so I went home. On the way home it came on again, I checked the code again and its different: P2096 Post catalyst fuel trim system too lean bank 1. What does this mean???