P0C6B: Generator Position Sensor Circuit B Low

P0C6B tells you that circuit B of the generator resolver, the cosine winding, reads too low. In the 2023 Outlander PHEV, Mitsubishi stores it if the cosine signal is no higher than 2.000 V throughout 0.21 s; the test never pauses while the generator control unit receives 8 V or more. To confirm a repair, the matching drive cycle only asks for the power supply mode to be switched ON and a wait of five seconds or more. Likely causes are a cosine lead with a short to ground, a pinched harness near the transaxle or a failing winding. If the resolver circuit tests fine and the code returns, Mitsubishi fits a new power drive unit and, once the EV oil cooling has been checked, a new generator. P0C66 is the sine-side twin, P0C6C the high reading on the same line.

Symptoms

• Malfunction indicator lamp right after switching on
• No charging of the drive battery by the engine
• Reduced performance in hybrid mode

Most likely causes

• Cosine lead of the resolver shorted to ground
• Pinched or crushed resolver harness near the transaxle
• Shorted cosine winding in the generator resolver
• Faulty cosine input in the power drive unit

What to check, in order

Start with the simplest. You can tick off each step.

1. Measure the voltage with the engine off and running
2. With the connector unplugged, check whether the signal wire is making contact with ground.
3. Clean and tighten the terminals
4. Check the accessory belt
5. Run a battery load test
6. Check the alternator wiring

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P0C6B means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• C: Subsystem depends on the code range
• 6B: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0C6B?

If the battery warning light comes on, you could get stranded. Turn off electrical accessories and go straight to a repair shop.

What causes code P0C6B?

The most common causes are: cosine lead of the resolver shorted to ground; pinched or crushed resolver harness near the transaxle; shorted cosine winding in the generator resolver.

Related codes

• P0C69Generator Position Sensor Circuit B
• P0C6CGenerator Position Sensor Circuit B High
• P0C66Generator Position Sensor Circuit A Low
• P0A4DGenerator Position Sensor Circuit Low

Sources

• mitsubishitechinfo.com: N503240240000800USA
• mitsubishitechinfo.com: N503241610000100USA
• patents.google.com: en

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.