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Trouble code P1400
I am getting a trouble code of P1400 on my 02 Explorer XLT. Code reads as Differential pressure electronic sensor ckt low voltage. What does this mean and how easy to fix??
Last edited by dbt38; Jul 9, 2006 at 11:33 AM. Reason: bad title
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Former Vendor
Joined: Jan 2006
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From: Seattle
P1400 DPF EGR Sensor Circuit Low Voltage Detected Detailed Description
The EGR monitor checks the DPF EGR sensor signal to the PCM for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value.
Possible causes :-
DPFEGR circuit short to GND.
Damaged DPF EGR sensor.
VREF short to GND.
Damaged PCM.
Diagnostic Aids
A DPF EGR PID reading less than 0.2 volt with the key ON and engine OFF or running, indicates a hard fault.
Ed
The EGR monitor checks the DPF EGR sensor signal to the PCM for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value.
Possible causes :-
DPFEGR circuit short to GND.
Damaged DPF EGR sensor.
VREF short to GND.
Damaged PCM.
Diagnostic Aids
A DPF EGR PID reading less than 0.2 volt with the key ON and engine OFF or running, indicates a hard fault.
Ed
