DTC P050E [MZI-3.7]
id0102d2870100
|
DTC P050E |
Cold start engine exhaust temperature out of range |
|---|---|
|
DETECTION CONDITION
|
• The PCM calculates the actual catalyst warm up temperature during a cold start. The PCM then compares the actual temperature to the expected catalyst temperature model. The difference between the actual and expected temperatures is a ratio. When this ratio exceeds the calibrated value this DTC is set and the malfunction indicator lamp (MIL) illuminates.
|
|
POSSIBLE CAUSE
|
• Intake air restriction
• Exhaust restriction
• Mechanical concern with the engine (insufficient compression)
• Throttle body malfunction
• Vacuum leakage
• PCM malfunction
|
Diagnostic procedure
|
STEP |
INSPECTION |
ACTION |
|
|---|---|---|---|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
|
Yes
|
Go to the next step.
|
|
No
|
Record FREEZE FRAME DATA on the repair order, then go to the next step.
|
||
|
2
|
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
|
Yes
|
Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY RELATED PENDING CODE OR STORED DTCs
• Turn the ignition switch off then to the ON position (Engine off).
• Verify related pending code or stored DTCs.
• Is other DTCs present?
|
Yes
|
Go to the appropriate DTC troubleshooting.
(See DTC TABLE [MZI-3.7].)
|
|
No
|
Go to the next step.
|
||
|
4
|
INSPECT AIR CLEANER ELEMENT
• Remove air cleaner element with the engine running.
• Is the engine speed increased?
|
Yes
|
Replace the air cleaner element, then go to Step 9.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT INTAKE AIR SYSTEM FOR EXCESSIVE AIR SUCTION
• Visually inspect the hose in intake air system for looseness or damages.
• Is there any malfunction?
|
Yes
|
Repair or replace the malfunctioning part, then go to Step 9.
|
|
No
|
Go to the next step.
|
||
|
6
|
INSPECT THROTTLE BODY PASSAGE
• Is the throttle body clogged?
|
Yes
|
Clean or replace the throttle body passage, then go to Step 9.
|
|
No
|
Go to the next step.
|
||
|
7
|
INSPECT ENGINE COMPRESSION
• Inspect the engine compression.
• Is the engine compression normal?
|
Yes
|
Go to the next step.
|
|
No
|
Overhaul the engine, then go to Step 9.
|
||
|
8
|
INSPECT FOR RESTRICTION IN EXHAUST SYSTEM AND TWC
• Is there any restriction?
|
Yes
|
Replace malfunctioning part, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
9
|
VERIFY TROUBLESHOOTING OF DTC P050E HAS BEEN COMPLETED
• Verify that all disconnected connectors are reconnected.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the M-MDS.
• Perform the “KOEO and KOER self-test”.
• Retrieve DTCs using the M-MDS.
• Is the PENDING CODE for this DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
10
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
(See DTC TABLE [MZI-3.7].)
|
|
No
|
Troubleshooting completed.
|
||