Hydraulic Pump Motor Control Circuit Range/Performance Problem
There's an issue with the hydraulic pump motor control circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer is not getting the expected signal from the hydraulic pump motor control, which means it might not be working right, affecting brake performance and stability.
What the computer is actually seeing
The ABS module monitors the hydraulic pump motor's operation; it expects to see certain voltage levels (typically around 12V) that signify proper functioning. If the voltage drops below 9V or rises above 14V, the control circuit is flagged for a fault.
What a healthy reading looks like
Normal voltage at the pump motor control circuit should be between 10V and 14V during operation.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the brake fluid level. Ensure it’s above the minimum mark. If low, top it up and recheck the code.
- 2Inspect wiring and connectors going to the hydraulic pump motor for damage or corrosion. Repair or replace as needed.
- 3Using a multimeter, check the voltage at the pump motor control circuit. It should be between 10V and 14V. If it's out of range, trace back through the wiring harness for shorts or opens.
- 4Test the hydraulic pump motor directly by applying power. If it doesn't operate, replace the pump.
- 5If the pump works and you have good voltage, then test or replace the ABS control module.
Common causes
- Faulty hydraulic pump motor
- Damaged wiring or connectors in the pump circuit
- Malfunctioning ABS control module
- Low brake fluid level
- Corrosion at electrical connections
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's not recommended to drive, as brake performance may be impaired.
Will this code clear on its own?
It can clear if the issue resolves itself, but typically requires diagnostic steps to diagnose accurately.
Why does this code sometimes pair with other codes?
Multiple codes can indicate related issues, particularly in the ABS system or hydraulic circuits.
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