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Power Stroke Transmission Diagnostic Trouble Codes - Transmission Troubles?

Solutions For Ford Automatic Transmissions

Jul 16, 2007
Photographers: David Kennedy
Photo 2/2   |   ford Power Stroke transmission
Picture this: you've installed a new programmer that adds 150-plus horsepower and more than 200 lb-ft of torque to your 7.3L Power Stroke. The only problem is, your E40D-4R100 automatic transmission is having trouble dealing with all the extra juice surging through the drivetrain. Luckily, many new programmers will read diagnostic trouble codes (DTC) caused by an ailing transmission.
Pat Barrett of Level 10 Power has been working with Fords since 1973, including a super-strong transmission build for a powerful twin-turbo Expedition that was sold only in Africa and the Middle East. He's compiled this chart full of trouble codes along with the affected components, a description of the problem, the symptoms it will cause, and the action you need to take to fix it. So if you're already getting a transmission trouble code, take a look at the chart. If you're not, read the chart anyway so you're ready when trouble arises. Put this issue in a safe place so you can reference it when your Power Stroke gets too powerful for your slush box.
five-digit dtc component description condition symptom action
p0102, p0103,
p1100, p1101
mass airflow sensor (maf) maf concerns maf system has a malfunction that may cause a transmission concern. high or low electronic pressure control (epc), incorrect shift schedule. Incorrect torque-converter clutch-engagement scheduling. Symptoms similar to a tp failure. wiring or
map sensor
p0117 engine coolant temperature sensor (ect) ect indicates 257°f voltage drop across ect exceeds scale set for temperature 257°f (grounded). torque-converter clutch will always be off, resulting in reduced fuel economy. wiring or
ect sensor
p0118 ect ect indicates -40°f voltage drop across ect exceeds scale set for temperature -40°f (open circuit). torque-converter clutch will always be off, resulting in reduced fuel economy. wiring or
ect sensor
p0122, p0123,
p1120
throttle position sensor (tp) tp concern pcm has detected an error that may cause a transmission concern.` harsh engagements, firm shift feel, abnormal shift schedule, torque-converter clutch does not engage, torque-converter clutch cycling. ` wiring or
tp sensor
p1702 digital transmission range (tr) intermittent dtc codes p0705 or p0708 refer to dtc codes p0705 or
p0708 condition.
refer to dtc codes p0705 or
p0708 symptom.
wiring or digital
tr sensor
p1704 digital tr digital tr circuit reading in between digital tr sensor or shift cable incorrectly adjusted or digital tr circuit fail wrong commanded epc number. Digital tr reading the wrong gear wiring or digital
tr sensor
five-digit dtc component description condition symptom action
p0705 digital tr digital tr circuit failure
digital tr circuits indicating an invalid pattern in tr_d. Condition caused by a short to ground or an open in tr4, tr3a, tr2, and/or tr1 circuits. This dtc cannot be set by an incorrectly adjusted digital tr sensor. increase in epc pressure (harsh shifts). Defaults to od or d for all gear positions. In od position, trans stuck in d or second. wiring or digital tr sensor
p0708 digital tr digital tr sensor circuit
tr3a open
digital tr sensor circuit tr3a reading 2.6v–5.0v (open circuit). This dtc cannot be set by an incorrectly adjusted digital tr sensor. increase in epc pressure. Defaults to od
or d for all gear ranges.
wiring or digital
tr sensor
p1705 digital tr digital tr self test was not carried out in park or neutral vehicle not in park or neutral during
onboard diagnostic.
rerun onboard diagnostic in park
or neutral.
wiring or digital
tr sensor
p0715 turbine shaft speed sensor (tss) insufficient input from tss pcm detected a loss of tss signal
during operation.
harsh shifts, harsh torque-converter clutch activation, and harsh engagements. wiring or
tss sensor
p0717 tss tss signal intermittent pcm has detected an intermittent tss signal. harsh shifts, harsh torque-converter clutch activation, and harsh engagements. wiring or
tss sensor
p0718 tss tss signal noisy pcm has detected a noisy tss signal. harsh shifts, harsh torque-converter clutch activation, and harsh engagements. wiring or
tss sensor
p0720 output shaft speed sensor (oss) insufficient input from oss pcm has detected a loss of oss signal
during operation.
harsh shifts, abnormal shift schedule, no torque-converter clutch activation. wiring or
oss sensor
p0721 oss oss sensor signal noisy pcm has detected an erratic oss signal. harsh shifts, abnormal shift schedule, no torque-converter clutch engagement. wiring or
oss sensor
p0722 oss insufficient input
from oss
pcm has detected a loss of oss signal. harsh shifts, abnormal shift schedule, no torque-converter clutch engagement. wiring or
oss sensor
p0731 shift solenoid a (ssa), shift solenoid b (ssb),
or internal parts
first-gear error no first gear. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material). Engine rpm could be higher or lower than expected.
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0732 ssa, ssb,
or internal parts
second-gear error no second gear. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material). Engine rpm
could be higher or lower than expected.
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0733 ssa, ssb,
or internal parts
third-gear error no third gear. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material). Engine rpm
could be higher or lower than expected.
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0734 ssa, ssb,
or internal parts
fourth-gear error no fourth gear. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material). Engine rpm
could be higher or lower than expected.
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0741 torque converter control (tcc), internal components tcc slippage detected the pcm picked up an excessive amount of slippage during normal vehicle operation. tcc slippage/erratic or no torque-converter clutch operation. Flashing transmission
control indicator lamp (tcil).
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0743 tcc, wiring, powertrain control module (pcm) tcc solenoid circuit failure during onboard diagnostic tcc solenoid circuit fails to provide voltage drop across solenoid. Circuit open or shorted, or pcm driver failure during onboard
diagnostic.
short circuit: engine stalls in second (od, 2 range) at low idle speeds with brake applied.
open circuit: torque-converter clutch never engages. May flash tcil.
wiring or pts hydrosystem
five-digit dtc component description condition symptom action
p0750 ssa, wiring, pcm
ssa solenoid
circuit failure
ssb circuit fails to provide voltage drop across solenoid. Circuit open or shorted, or pcm driver failure during onboard diagnostic. incorrect gear selection, depending on
condition mode and manual lever position. See solenoid on/off chart.
wiring or pts hydrosystem
p0753 ssa, wiring, pcm ssa electrical failure ssb circuit fails to provide voltage drop across solenoid. Circuit open or shorted, or pcm driver failure during onboard diagnostic. incorrect gear selection, depending on
condition mode and manual lever position. See solenoid on/off chart. May flash tcil.
wiring or pts hydrosystem
p0755 ssa, wiring, pcm ssb solenoid
circuit failure
ssb circuit fails to provide voltage drop across solenoid. Circuit open or shorted, or pcm driver failure during onboard diagnostic.
incorrect gear selection, depending on
condition mode and manual lever position. See solenoid on/off chart.
wiring or pts hydrosystem
p0758 ssb, wiring, pcm ssb electrical
circuit failure
ssb circuit fails to provide voltage drop across solenoid. Circuit open or shorted, or pcm driver failure during onboard diagnostic.
incorrect gear selection, depending on
condition mode and manual lever position. See solenoid on/off chart. May flash tcil.
wiring or pts hydrosystem
p1714 ssa, internal components ssa malfunction mechanical failure of the solenoid detected.
incorrect gear selection, depending on
condition, mode and manual lever position. See solenoid operation chart.
pts hydrosystem
p1715 ssb ssb malfunction mechanical failure of the solenoid detected. incorrect gear selection, depending on
condition, mode and manual lever position. See solenoid operation chart.
pts hydrosystem
p0781 ssa or internal parts 1–2 shift error engine rpm drop not detected when 1–2 shift was commanded by pcm. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material).
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0782 ssa, ssb, or internal parts 2–3 shift error engine rpm drop not detected when 2–3 shift was commanded by pcm. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material).
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p0783 ssa, ssb, or internal parts 3–4 shift error engine rpm drop not detected when 3–4 shift was commanded by pcm. incorrect gear selection, depending on failure or mode and manual lever position. Shift errors may also be due to other internal
transmission concerns (stuck valves,
damaged friction material).
pts hydrosystem.
if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p1703 brake position pedal switch (bpp) bpp switch
circuit failed
brake on/off circuit failure. failed on or not connected: torque-converter clutch will not engage at less than one-third
throttle. Failed off or not connected: torque-converter clutch will not disengage when
brake is applied.
wiring or
bpp switch
p1703 bpp brake not actuated during onboard
diagnostic
brake not cycled during key on, engine running.
failed on or not connected: torque-converter clutch will not engage at less than one-third
throttle. Failed off or not connected: torque-converter clutch will not disengage when
brake is applied.
wiring or
bpp switch
p0713 transmission fluid temperature (tft), wiring, pcm -40°f indicated tft sensor circuit open
voltage drop across tft sensor exceeds scale set for temperature -40°f.
firm shift feel. wiring or
tft sensor
p1711 tft tft out of onboard diagnostic range transmission not at operating temperature during onboard diagnostic. cannot run test. warm vehicle to normal temperature
p0712 tft, wiring, pcm 315°f indicated tft sensor circuit grounded voltage drop across tft sensor exceeds scale set for temperature of 315°f. firm shift feel. wiring or
tft sensor
p1713 tft, wiring, pcm tft continually
reading cold
tft sensor in range low failure firm shift feel. Substitute ect for tft wiring or
tft sensor
p1783 tft transmission over
temperature condition indicated
transmission fluid temperature exceeded 270°f. increase in epc pressure. wiring or
tft sensor
clogged cooler
five-digit dtc component description condition symptom action
p1718 tft, wiring, pcm tft continually reading hot tft sensor in range low failure. firm shift feel. Substitute ect for tft wiring or tft sensor
p0740 tcc, wiring, pcm tcc electrical failure tcc circuit fails to provide voltage drop across solenoid. Circuit open, shorted, or pcm driver failure during onboard diagnostics. short circuit, engine stalls in second (od, 2 range) at low speeds with brake applied. open circuit, torque-converter clutch never engages. May flash tcil.  
p1740 tcc tcc malfunction mechanical failure of the solenoid detected. failed on: engine stalls in second (od, second ranges) at low idle speeds with brake applied. Failed off: torque converter never applies. pts hydrosystem. if there is lots of debris in the pan, you will need a pts kit and a pts billet torque converter
p1741 tcc, internal components excessive torque- converter clutch-engagement error excessive variations in slip (engine speed surge) across the torque-converter clutch. engine rpm oscillation is present in third gear. pts hydrosystem, billet torque convertor. If there is lots of debris in the pan, you will need a pts kit
p1742 tcc, internal components tcc solenoid failed on tcc solenoid has failed on by electric, mechanical, or hydraulic concern. harsh shifts. pts hydrosystem, billet torque convertor. If there is lots of debris in the pan, you will need a pts kit
p1743 tcc, internal components tcc solenoid failed on tcc solenoid has failed due to electric, mechanical, or hydraulic concern. harsh shifts. pts hydrosystem, billet torque convertor. If there is lots of debris in the pan, you will need a pts kit
p1744 tcc tcc the pcm picked up an excessive amount of tcc slippage during normal vehicle operation. tcc slippage/erratic or no torque-converter clutch operation. pts hydrosystem, billet torque convertor. If there is lots of debris in the pan, you will need a pts kit
p1746, p0960 epc, wiring, pcm epc solenoid open circuit voltage through epc solenoid is checked. An error will be noted if tolerance is exceeded. open circuit causes maximum epc pressure, harsh engagements and shifts. wiring or super solenoid
p1747, p0962 epc, wiring, pcm epc solenoid circuit failure, shorted circuit or output driver voltage through epc solenoid is checked. An error will be noted if tolerance is exceeded. short circuit causes minimum epc pressure (minimum capacity) and limits engine torque (alternate firm). wiring or super solenoid
p1760 epc, wiring, pcm epc solenoid circuit failure, shorted circuit or output driver pcm detected a loss of epc during operation. unexpected reduction in engine torque. wiring or super solenoid
p17811 4x4 low switch 4x4 low switch closed 4x4 low switch closed or 4x4 low indicator lamp circuit open. failed on: early shift schedules in 4x2 and 4x4 high range. Failed off: shifts delayed in 4x4 low 1. wiring or 4x4 switch
p0748 epc solenoid epc solenoid circuit failure voltage through epc solenoid is checked. An error will be noted if tolerance is exceeded. short circuit results in minimum epc pressure (minimum capacity) and limits engine torque (alternate firm). Not all gears present. Open circuit: maximum pca pressure, harsh engagements and shifts. wiring or super solenoid
p1729 4x4 low 4x4 low switch failure 4x4 low switch failure during normal vehicle operation. early shifts, harsh shifts, increase in electronic pressure control valve. wiring or 4x4 switch`
p1728 transmission transmission slip error the pcm has detected an excessive amount of slippage during normal operation. transmission slippage erratic or no torque-converter clutch operation. complete transmission repair

Sources

Level 10 Power
www.levelten.com
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