Fault codes, Operator controls – Spicer TPCS (Tire Pressure Control System) Service Manual User Manual
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Fault Codes
When an exclamation point (!) follows the digital display, the display is reporting a system fault. The following chart
provides a brief overview of the Tire Pressure Control System fault codes and the affected system.
Fault Code
Code Type
1C!
2C!
3C!
4C!
5C!
6C!
7C!
8C!
9C!
10C!
11C!
12C!
13C!
1P!
2P!
3P!
4P!
5P!
6P!
7P!
8P!
9P!
10P!
11P!
No operation
Normal operation
—
Inflate only
Inflate only
No operation
—
No operation
No operation
No operation
No operation
No operation
No operation
No operation
Inflate only
—
No operation
Pressure check only
Pressure check only
—
Pressure check only
Pressure check only
Channel inoperative
Channel inoperative
Channel inoperative
Low power
No power down
Not assigned
Bad connection or no speed signal
Bad connection from Electronic Control Unit
to Operator Control Panel
No pressure transducer reading
Too high pressure transducer reading
Not assigned
Solenoid does not pass electrical diagnostics
Solenoid does not pass electrical diagnostics
Solenoid does not pass electrical diagnostics
Solenoid does not pass electrical diagnostics
Solenoid does not Pass electrical diagnostics
Solenoid does not pass electrical diagnostics
Relay open or shorted
No vacuum at Pneumatic Control Unit
or in control line
Not assigned
Unintentional vacuum
Slow inflate or deflate
Quick loss of pressure
Not assigned
High pressure switch does not close
Wet tank pressure does not rise
Vent pressure is outside range
Channel loses pressure in inflate mode
Channel fails to confirm
One tire pressure lower than others
System Status
Fault Cause
Power
—
Speed sensor
Control communication
Pressure transducer
—
Steer solenoid
Drive solenoid
Trailer solenoid
Supply solenoid
Deflate solenoid
Control solenoid
Relay
No deflate signal
—
Vacuum fault
Channel between modes
Pressure read low
—
Inadequate air pressure
Atmospheric
Trend fault
Tire leak (confirm)
Tire leak (imbalance)
*Note: Refer to Troubleshooting Guide AXTS-0010 for more detailed description of codes.