CODE PCU 006

Engine speed too high to start a downshift

Reduce engine speed until downshift is permitted. Only one downshift will be granted after the engine speed is sufficiently reduced.

CODE PCU 013

Park commanded, park brake pressure remains high

Allow tractor hydraulic system to warm up. Have your John Deere Dealer repair

CODE PCU 017

Operator out of seat with transmission in neutral

Put tractor in park before leaving seat, or remain in seat while tractor is in neutral. Operator too light to engage presence switch, or operator not positioned squarely in seat.

CODE PCU 018

Secondary park brake set while in gear

Have your John Deere Dealer repair

CODE PCU 019

Park brake pressure sensor circuit open or shorted to ground

Have your John Deere Dealer repair

CODE PCU 020

Park brake pressure sensor shorted to power

Have your John Deere Dealer repair

CODE PCU 021

Clutch pedal top and bottom switch circuit conflict

Have your John Deere Dealer repair

CODE PCU 022

Clutch pedal sensor circuit fault

Have your John Deere Dealer repair

CODE PCU 023

Clutch pedal potentiometer out of range

Have your John Deere Dealer repair

CODE PCU 024

Park brake previously detected not working

Have your John Deere Dealer repair

CODE PCU 025

Park brake not holding

Have your John Deere Dealer repair

CODE PCU 026

Tractor moving, park inhibited

Reduce speed below 470 rpm, approximately 2 km/h

CODE PCU 027

Transmission not calibrated

Have your John Deere Dealer repair

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CODE PCU 028

Clutch partially engaged too long

Do not partially depress clutch pedal while the tractor is in gear for a period of time

CODE PCU 029

Park brake will not release

Have your John Deere Dealer repair

CODE PCU 031

Clutch partially engaged

Do not partially depress clutch pedal while the tractor is in gear for a period of time, potential clutch damage may occur

CODE PCU 032

Clutch 1 solenoid circuit fault - current too low

Have your John Deere Dealer repair

CODE PCU 033

Clutch 1 solenoid circuit fault - current too high

Have your John Deere Dealer repair

CODE PCU 034

Clutch 2 solenoid circuit fault - current too low

Have your John Deere Dealer repair

CODE PCU 035

Clutch 2 solenoid circuit fault - current too high

Have your John Deere Dealer repair

CODE PCU 036

Clutch R solenoid circuit fault - current too low

Have your John Deere Dealer repair

CODE PCU 037

Clutch R solenoid circuit fault - current too high

Have your John Deere Dealer repair

CODE PCU 038

Checksum error detected in diagnostic mode

Have your John Deere Dealer repair

CODE PCU 039

A reverse enable fault

Have your John Deere Dealer repair

CODE PCU 040

Forward enable circuit fault

Have your John Deere Dealer repair

CODE PCU 041

Forward Power and Reverse enable circuits conflict

Have your John Deere Dealer repair

CODE PCU 042, 043, 044,

Gear command and enable circuits conflict

Have your John Deere Dealer repair

CODE PCU 045

Gear command and not-neutral signal conflict

Have your John Deere Dealer repair

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CODE PCU 046

Neutral or park commanded / forward or reverse enabled

Have your John Deere Dealer repair

CODE PCU 047

Calibration fault

Have your John Deere Dealer repair

CODE PCU 048

PCU supply voltage low with engine running

Have your John Deere Dealer repair

CODE PCU 049

ACU commanding a gear, but clutch override relay input is low

Have your John Deere Dealer repair

CODE PCU 050

Gear command with engine off

Have your John Deere Dealer repair

CODE PCU 051

No tractor motion with engine running

Have your John Deere Dealer repair

CODE PCU 053, 054, 055

Transmission oil pressure low, Sensor shorted to power or ground

Have your John Deere Dealer repair

CODE PCU 056

Park solenoid #1 circuit fault

Have your John Deere Dealer repair

CODE PCU 062

Neutral-to-gear shift requested, operator not in seat

Sit in seat to shift tractor

CODE PCU 064

Shuttle shift with excessive ground speed

Move shift lever to N, and reduce ground speed, then shuttle shift. See OM SHIFTING THE TRANSMISSION

CODE PCU 065

EOL checksum error during normal operation

Have your John Deere Dealer repair

CODE PCU 066

Shift lever in gear at start-up

Turn key off, return shift lever to park, turn key back on, or return shift lever to NEUTRAL before making shift request.

CODE PCU 067

Start in gear circuit fault

Possible attempt to "bypass start"

CODE PCU 069

Calibration data for one or more clutches exceeds normal limits

Have your John Deere Dealer repair

CODE PCU 070

PCU not receiving gear commands from ACU

Have your John Deere Dealer repair

CODE PCU 071

CAN bus communication missing

Have your John Deere Dealer repair

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CODE PCU 072

RAM test failure

Have your John Deere Dealer repair

CODE PCU 073

Serial EPROM test failure

Restart engine to clear code or Have your John Deere Dealer repair

CODE PCU 074

Software watchdog time-out / bad power down

Restart engine to clear code or Have your John Deere Dealer repair

CODE PCU 076

Transmission input speed does not match engine speed data

Have your John Deere Dealer repair

CODE PCU 077

Transmission 2nd stage speed sensor data conflict

Have your John Deere Dealer repair

CODE PCU 078

Transmission 2nd stage speed sensor data conflict

Have your John Deere Dealer repair

CODE PCU 079

Transmission output speed sensor #1 data conflict

Have your John Deere Dealer repair

CODE PCU 080

Park solenoid #2 output fault

Have your John Deere Dealer repair

CODE PCU 081

Output speed sensors disagree - no speed from output #2

Have your John Deere Dealer repair

CODE PCU 082

Park brake backup control unit conflict

Have your John Deere Dealer repair

CODE PCU 083, 084, 085, 086, 087, 088, 089, 090, 091, 092, 093, 094

Clutch A , B, C, L, M, H, solenoid circuit fault

Have your John Deere Dealer repair

CODE PCU 095, 096

Transmission oil temperature too high. 095 (Warning), 096 (Stop engine)

Check Transmission fluid level. Allow transmission to cool before continuing operation. Have your John Deere Dealer repair

CODE PCU 097, 098

Transmission oil temperature sensor faulty

Have your John Deere Dealer repair

CODE PCU 099

Invalid gear request received

Have your John Deere Dealer repair

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