1A-288 Engine Control System (4HK1)
DTC P2453 (Flash Code 141)
Description
The exhaust differential pressure sensor is attached to
the chassis frame near the diesel particulate defuser
(DPD) assembly. The exhaust differential pressure
sensor is a transducer that varies voltage according to
changes of the exhaust gas differential pressure
between in front and in rear of DPD filter. If the ECM
detects that the exhaust differential pressure went
excessively high, this DTC will set.
Condition for Running the DTC
• DTCs P060B, P0697, P2454, P2455 and P2456
are not set.
• The battery voltage is between 18 to 32 volts.
• The ignition switch is ON.
Condition for Setting the DTC
• The exhaust differential pressure is more than 60
kPa.
Action Taken When the DTC Sets
• The ECM illuminates the MIL when the diagnostic
runs and fails. Refer to DTC Type Definitions for
Action Taken When the DTC Sets - Type A.
• The ECM limits fuel injection quantity.
Condition for Clearing the DTC
• Refer to DTC Type Definitions for Condition for
Clearing the MIL/ DTC - Type A.
Diagnostic Aids
• If an intermittent condition is suspected, refer to
Intermittent Conditions in this section.
• Misrouted, disconnected or plugged exhaust
differential pressure hoses or pipes will set this
DTC.
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing DTC P2453
Step Action Value(s) Yes No
1
Did you perform the Diagnostic System Check
- Engine Controls?
—
Go to Step 2
Go to Diagnostic
System Check -
Engine Controls
2
1. Install a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Turn ON the ignition for 30 seconds. DO NOT
start the engine.
4. Monitor the DTC Information with a scan tool.
Is DTC P2456 set?
—
Go to DTC P2456 Go to Step 3
LG4HKED-WE-0871.book 288 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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