LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2006 >> SSR Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 6.0L - DTC P0449 To DTC P1682 >> DTC P0453 >> Test Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test Description

The number below refers to the step number on the diagnostic table.

  1. 2:  If DTC P1639 is set, the 5-volt reference circuit may be shorted to a voltage.
DTC P0453

Step Action Values Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Idle the engine for 1 minute.
  2. Monitor the DTC information using the scan tool.
Did DTC P0641 or P0651 fail this ignition?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3
  1. Turn ON the ignition, with the engine OFF.
  2. Observe the Fuel Tank Pressure sensor parameter with a scan tool.
Is the Fuel Tank Pressure sensor parameter more than the specified value?		 4.3 V Go to Step 5  Go to Step 4 
4
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Turn ON the ignition, with the engine OFF.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 5  Go to Testing for Intermittent Conditions and Poor Connections
5
  1. Turn OFF the ignition.
  2. Disconnect the fuel tank pressure (FTP) sensor harness connector.
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the Fuel Tank Pressure sensor parameter with a scan tool.
Does the scan tool indicate that the FTP sensor voltage is more than the specified value?		 4.3 V Go to Step 6  Go to Step 7 
6 Test the signal circuit for a short to voltage. Refer to Testing for Short to Ground and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 10 
7 Probe the low reference circuit of the FTP sensor with a test lamp that is connected to battery voltage. Refer to Troubleshooting with a Test Lamp .
Did the test lamp illuminate?		 - Go to Step 9  Go to Step 8 
8 Test the low reference circuit for an open or high resistance. Refer to Testing for Continuity and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 10 
9 Test for an intermittent and for a poor connection at the FTP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 11 
10 Test for an intermittent and for a poor connection at the control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 13  Go to Step 12 
11 Replace the FTP sensor. Refer to Fuel Tank Pressure Sensor Replacement .
Did you complete the replacement?		 - Go to Step 13  -
12 Replace the engine control module (ECM). Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 13  -
13
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 - Go to Step 2  Go to Step 14 
14 Observe the Capture Info with a scan tool.
Have any DTCs not been diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
scientia non olet · About LEMON Manuals