P0898 — Transmission Control System MIL Request Circuit Low

What Does P0898 Mean?

P0898 is a diagnostic trouble code indicating: Transmission Control System MIL Request Circuit Low. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0898

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Control System MIL Request reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Harsh or delayed shifting

Common Causes

🔍 Open or broken wire in Transmission Control System MIL Request circuit
🔍 Poor ground connection at Transmission Control System MIL Request
🔍 Faulty Transmission Control System MIL Request with no output signal
🔍 Disconnected or loose Transmission Control System MIL Request connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P0898 mean?

P0898 indicates: Transmission Control System MIL Request Circuit Low. The vehicle's computer has detected that the Transmission Control System MIL Request is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P0898?

Only short distances if absolutely necessary. P0898 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P0898?

Repair costs for P0898 typically range from $20 to $500, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Repair broken wire or restore ground in Transmission Control System MIL Request circuit
🔧 Clean and secure Transmission Control System MIL Request connector and ground points
🔧 Replace failed Transmission Control System MIL Request

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P0898: Transmission Control System MIL Request Circuit Low