Code P2262

SF18C said:

all the people = 2!

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Well, technically 3 since you had it installed aswell and got the code, even if the code was from other causes. Obviously there isn't enough of consensus to make a conclusion one way or the other. But I still haven't seen a report of a non-chipped Dart throw the code. Hognutz's code seemed to directly come from the installation/installation of the unit whether it be installation error or a problem with the unit itself. It'd still be nice to keep track of and figure out if there is a common installer error/mistake that causes it to happen or not so that others can be sure to avoid the mistake and subsequent issues.

Like I said, I love my MM ECU and I'm not claiming there is an issue with the chip itself. But it has been the only common factor in seeing this code pop-up and obviously the potential is there since the sensors it plugs into are the ones that would be responsible for throwing the code if connection is interfered with/lost. This can easily be contributed to one of the issues that Madness Mike has already outline:

We have had four different issues that could be causing the problem. 1. The plugs could be in backwards. 2. There could be a loose wire in the Harness. The wire could come loose from the manufacture, during shipping, or during installation. 3. During installation the pins in the connectors became bent. 4. The connectors were not securely plugged in. Each time we were able to correct the problem. We havent had any modules just out right fail it has always had some underlying cause that was easily fixed.

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28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P2262-00-TURBOCHARGER BOOST PRESSURE NOT DETECTED - MECHANICAL

Theory of Operation

When the accelerator is closed suddenly, excessive boost pressure can build up between the Turbocharger and the Throttle Body which can cause damage to the Turbocharger. This can occur because the compressed air created by the Turbocharger has no place to go. This results in compressor surge. The Powertrain Control Module (PCM) detects this pressure increase via input from the Boost Pressure Sensor. The Boost Pressure Sensor operates as a typical three wire sensor. The PCM provides a 5-volt supply and sensor return circuit to the Boost Pressure Sensor and receives a feedback voltage on the signal circuit. The Turbocharger Surge Valve is responsible for venting the boost pressure between the Turbocharger and Throttle Body during sudden deceleration. The Turbocharger Surge Valve is normally spring loaded closed. When the PCM receives an input signal from the Boost Pressure Sensor that the pressure is above a calibrated amount, the PCM grounds the Turbocharger Surge Valve Control circuit which electrically opens the valve and routes the excess pressure between the Turbocharger and the Throttle Body back to the inlet of the Turbocharger, relieving the pressure and preventing compressor surge.

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

•With the engine running.
•When the Wastegate Valve is commanded closed or is open at a value less than 100%.

Set Conditions:

•The difference between the Powertrain Control Module (PCM) (modeled position minus the actual position) is greater than 30 kPa (4.35 PSI).

Default Actions:

•The MIL light will illuminate.

Possible Causes

RESTRICTED AIR FILTER
BOOST SYSTEM PRESSURE HOSES RESTRICTED OR LEAKING
LARGE INTAKE SYSTEM LEAK OR RESTRICTION
INTERCOOLER LEAK
EXHAUST SYSTEM RESTRICTION
WASTEGATE SOLENOID
WASTEGATE VALVE STICKING OPEN
TURBOCHARGER (SEIZED TURBINE)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

1.CHECK FOR CHECK FOR AN ACTIVE DTC

1. Turn the ignition on.

2. With the scan tool, read DTCs and record on the repair order.

3. With the scan tool, erase DTCs in the Powertrain Control Module.

4. Test drive the vehicle.

5. With the scan tool, read DTCs .

Is the DTC active or pending?

Yes

•Go To 2

No

•Perform the INTERMITTENT DTC Diagnostic Procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).


2.CHECK THE AIR FILTER

1. Turn the ignition off.

2. Remove and inspect the Air Filter and housing inlet for snow, soiling or excessive dirt and debris which may cause air flow restriction.

Were any of these problems found?

Yes

•Replace the Air Filter or remove the obstruction.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No

•Go To 3


3.CHECK FOR INTAKE SYSTEM LEAKS OR RESTRICTIONS

NOTE: Damaged, restricted or poorly connected Intake System and Turbocharger System related tubes can cause this DTC to set.

1. Inspect all air intake, crankcase vent and Turbocharger related hoses/tubes and clamps for leaks or damage.

2. Inspect all boost pressure system hoses for leaks or restrictions.

3. Inspect the Intercooler Assembly for signs of a leak.

Were any problems found?

Yes

•Repair or replace as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No

•Go To 4


4.CHECK FOR EXHAUST SYSTEM RESTRICTIONS

1. Inspect the complete exhaust system for damaged, bent or clogged pipes that can cause exhaust system restrictions and excessive back pressure.

Were any problems found?

Yes

•Repair or replace as necessary.
•Perform the POWERTRAIN VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No

•Go To 5


5.WASTEGATE AND SOLENOID INSPECTION

1. Inspect the Wastegate Solenoid, linkage and the Wastegate for proper operation. Refer to the appropriate Service Information.

2. Inspect and test each of the Wastegate Solenoid vacuum/pressure hoses between the engine, the Wastegate Solenoid and the Wastegate Valve.

3. Inspect and test each of the Wastegate Solenoid electrical circuits between the solenoid connector and PCM C1 harness connector.

NOTE: Test each electrical circuit for high resistance, a short to ground and a short to voltage.

Were any problems found?

Yes

•Repair as necessary.
•Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No

•Repair or replace the Turbocharger in accordance with the Service Information.(Refer to 09 - Engine/Turbocharger System/TURBOCHARGER/Removal) .
•Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).