What is Komatsu PC200LC-7 Fault Code E213?

Fault Code E213 on the Komatsu PC200LC-7 indicates a malfunction in the hydraulic pump solenoid valve circuit, specifically related to abnormal electrical current or voltage detected by the engine control module (ECM). This code triggers when the ECM detects an open circuit, short circuit, or improper resistance in the wiring or solenoid valve that controls hydraulic pump displacement.

The hydraulic pump solenoid valve is critical for regulating hydraulic flow and pressure in the PC200LC-7's load-sensing system. When this circuit fails, the machine cannot properly adjust pump output to match operational demands, leading to performance inefficiencies and potential component damage. For used excavators, this fault often stems from age-related electrical degradation rather than mechanical pump failure.

Common Symptoms

• Warning lamp illuminated on the monitor panel with E213 displayed on diagnostic screen
• Reduced hydraulic power during combined operations (e.g., boom and swing functions simultaneously)
• Sluggish response when operating multiple hydraulic circuits under load
• Intermittent power loss that may worsen as the machine warms up, indicating heat-related electrical issues
• Engine may run normally at idle but exhibits poor performance under hydraulic demand

Potential Causes

The most common causes of Code E213 on used PC200LC-7 excavators include:

• Damaged wiring harness near the hydraulic pump, especially where cables contact the pump body or frame (known wear point on this model)
• Corroded connectors at the solenoid valve or ECM due to moisture intrusion over years of operation
• Failed pump solenoid valve coil with incorrect resistance (normal resistance: 10-30 ohms depending on specification)
• ECM internal fault affecting the solenoid driver circuit (less common but possible in high-hour machines)
• Broken or chafed wires in the engine compartment harness, particularly at flex points near engine mounts

How to Troubleshoot and Fix Code E213

Step 1: Visual Inspection Begin with a thorough inspection of the wiring harness from the ECM to the hydraulic pump solenoid valve. On used excavators, check for wire insulation damage, especially where the harness runs alongside hot surfaces or vibration points. Look for corroded connectors with green oxidation or moisture.

Step 2: Electrical Testing Using a digital multimeter, disconnect the solenoid valve connector and measure resistance across the solenoid coil terminals. Compare readings to the service manual specification (typically 10-30 ohms). Check for voltage supply at the connector with ignition on—should read approximately 12-24V depending on system design. Test harness continuity from the solenoid connector back to the ECM pins.

Step 3: Component Testing and Replacement If resistance or voltage readings are out of specification, isolate the failure. Replace damaged harness sections with OEM-equivalent wiring, ensuring proper routing away from heat and friction points. If the solenoid valve tests faulty, replace the entire valve assembly. For used machines, apply dielectric grease to all reconnected electrical connectors to prevent future corrosion.

Disclaimer: This guide provides general troubleshooting information. Always consult the Komatsu PC200LC-7 service manual and consider professional diagnostic assistance for complex electrical issues or if you lack experience with high-voltage systems.