P2C94

Q: Will P2C94 clear itself?

P2C94 may clear itself after a few drive cycles if the underlying issue was temporary (such as a loose gas cap or minor sensor glitch). However, if the underlying problem persists, the code will return. It's best to have the vehicle diagnosed even if the light goes off.

Low Severity (Level 1)

Hybrid/EV Battery Contactor Control Supply Circuit Low

P2C94 usually means hybrid/EV Battery Contactor Control Supply Circuit Low.

Can you still drive with P2C94?

✅Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.

Typical repair cost: $30 – $300

Severity Level 1 — Low

This code indicates a minor issue that is unlikely to cause immediate driveability problems. You can typically continue driving but should have the vehicle inspected at your earliest convenience.

Common Symptoms

Warning light or malfunction indicator related to the battery saver/power management system is illuminated
The battery saver/power management system is not operating as designed
Power management reading zero or abnormally low
Diagnostic trouble code (DTC) stored in module memory

Possible Causes

Failed battery saver relay — internal resistance has increased, outputting a signal lower than specification
Damaged wiring or corroded connector in the battery saver/power management system circuit introducing high resistance
Short to ground in the battery saver/power management system signal wire — wire chafed through, signal voltage pulled low
Loose or oxidized ground connection for the battery saver relay — clean the ground and retest before replacing parts
Low system voltage (weak battery or failing alternator) causing sensor reference voltage to sag

Common Fixes

Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($47-89 at shop, free at auto parts store for basic scan)
Visually inspect the battery saver/power management system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $84 diagnostic fee at shop)
Test battery saver relay with a multimeter at the connector — compare readings to factory service manual specs. If out of spec, replace battery saver relay ($30-300)
Check the reference voltage supply to battery saver relay — should be steady 5V (or 12V) — if low, trace back to PCM/BCM voltage regulator ($114-405 if module repair needed)
Perform a voltage drop test on the ground side of the battery saver/power management system circuit — more than 0.1V drop means a bad ground that must be cleaned/repaired ($73-178 at shop)

Estimated Repair Cost

$30 – $300(typical range; varies by vehicle make and model)

These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.

Frequently Asked Questions

What does P2C94 mean?

P2C94 stands for "Hybrid/EV Battery Contactor Control Supply Circuit Low". P2C94 usually means hybrid/EV Battery Contactor Control Supply Circuit Low.

Can you drive with P2C94?

Safe to drive — this is an informational or minor issue. Schedule diagnosis at your convenience.

How much does it cost to fix P2C94?

Repair costs for P2C94 typically range from $30 to $300, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($47-89 at shop, free at auto parts store for basic scan); Visually inspect the battery saver/power management system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $84 diagnostic fee at shop); Test battery saver relay with a multimeter at the connector — compare readings to factory service manual specs. If out of spec, replace battery saver relay ($30-300).

Will P2C94 clear itself?

Related Repair Costs

Battery Replacement Cost

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Related OBD-II Codes

These codes are in the same range as P2C94 and often share similar causes and fixes.

P0016— Crankshaft Position - Camshaft Position Correla...P0017— Crankshaft Position - Camshaft Position Correla...P0018— Crankshaft Position - Camshaft Position Correla...P0019— Crankshaft Position - Camshaft Position Correla...P0315— Crankshaft Position System Variation Not Learned

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