PUMP GP-PISTON 4675122 - Caterpillar

Table 1
Error Code Character     Display     Description of Error    
1     70 HF 01     Engine stops    
2     70 HF 02     The speed sensor is abnormal.    
3     70 HF 03     Load is applied.    
4     70 HF 04     Faster than the high idle speed    
5     70 HF 05     Slower than the low idle engine speed    
6     70 HF 06     Feedback from governor actuator    
7     70 HF 07     The feedback circuit for the governor actuator is shorted to ground.    
8     70 HF 08     Feedback signal of the governor actuator is abnormal.    
9     70 HF 09     The high idle engine speed is lower than the Engine Speed Dial Setting 8 plus 50 rpm.    
    70 Hd 00     Retry error or too much hysteresis.