Throwing Code 26
#1
Throwing Code 26
"ECM detected the wrong potential voltage at the #1 quad-driver module circuit for 20 seconds."
I understand that somethings wrong, but can anyone help narrow down the possibilities ? Im thinking its something A/C related, but cant be to sure. Anyone have any ideas ? Thanks
I understand that somethings wrong, but can anyone help narrow down the possibilities ? Im thinking its something A/C related, but cant be to sure. Anyone have any ideas ? Thanks
#2
TECH Fanatic
iTrader: (4)
Is this the code as read from a scanner or did you look it up for the translation? I did a little research and came up with possibilities of EVAP purge solenoid and/or TCC solenoid spitting too much voltage at the PCM. Manual or auto car?
Edit: just saw Spec stage 2 clutch in your sig, so not an A4...
Edit: just saw Spec stage 2 clutch in your sig, so not an A4...
#3
Is this the code as read from a scanner or did you look it up for the translation? I did a little research and came up with possibilities of EVAP purge solenoid and/or TCC solenoid spitting too much voltage at the PCM. Manual or auto car?
Edit: just saw Spec stage 2 clutch in your sig, so not an A4...
Edit: just saw Spec stage 2 clutch in your sig, so not an A4...
#4
TECH Veteran
"ECM detected the wrong potential voltage at the #1 quad-driver module circuit for 20 seconds."
I understand that somethings wrong, but can anyone help narrow down the possibilities ? Im thinking its something A/C related, but cant be to sure. Anyone have any ideas ? Thanks
I understand that somethings wrong, but can anyone help narrow down the possibilities ? Im thinking its something A/C related, but cant be to sure. Anyone have any ideas ? Thanks
The correct code description is:
Evaporative Emission (EVAP) canister purge solenoid valve circuit
The computer is not liking the voltage potential on the circuit to the EVAP solenoid. Maybe that tune you have did not get the EVAP tuned out like you thought.
Trending Topics
#8
FormerVendor
Join Date: Dec 2010
Location: Collingdale Pa
Posts: 50
Likes: 0
Received 0 Likes
on
0 Posts
HERE IS A DESCRIPTION. CODE 26
Ignition voltage is supplied directly to the EVAP canister purge solenoid valve on CKT 541. The Powertrain Control Module (PCM) controls the solenoid valve by providing the ground path through CKT 428.
When the PCM is commanding a component "ON," the voltage of the control circuit should be "low" (near 0 volts). When the PCM is commanding the control circuit to a component "OFF," the voltage potential of the circuit should be "high" (near battery voltage). The primary function of the driver is to supply the ground for the component being controlled.
Each driver has a fault line which is monitored by the PCM. The PCM will monitor the voltage at the driver. If the fault detection circuit senses a voltage other than what is expected, the fault line status will change and the DTC will set.
DTC 26 WILL SET WHEN
The PCM detects the wrong voltage potential for 26 seconds on CKT 428.
ACTION TAKEN (PCM WILL DEFAULT TO)
The Malfunction Indicator Lamp (MIL) will illuminate and the PCM disables the driver for this circuit to prevent internal PCM damage.
DTC 26 WILL CLEAR WHEN
The fault condition(s) no longer exist, and the ignition switch cycled "OFF" then "ON."
CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
This test determines if the device can be controlled by the PCM.
This check can detect a partially shorted coil which would cause excessive current flow. If excessive current flow is detected, a circuit check will be performed to isolate the device from the wiring. Leave the circuit energized for 2 minutes to allow the coil to warm up. The coil may open (amps drop to "0") when warm.
The remaining circuit checks will identify a circuit problem that has caused an excessive current flow or inoperative solenoid.
DIAGNOSTIC AIDS
Inspect the harness and all related connectors including connections at the PCM. These may cause an intermittent. Check for damaged or pushed out terminals.
#10