P0013moderate severityPowertrain
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
on 1996 BMW 850i E31 5.0L V12 M70 · RWD
What this code means
The PCM detected a malfunction in the exhaust camshaft position actuator (VVT solenoid) circuit for Bank 1.
Symptoms
- Check Engine Light
- Rough idle
- Poor emissions
- Reduced power
Common causes
- Faulty exhaust VVT solenoid
- Wiring damage
- PCM failure
- Low oil level
Diagnostic steps
- Test VVT solenoid resistance
- Inspect wiring
- Check oil level
- Command solenoid with scan tool
Repair notes
Replace exhaust VVT solenoid or repair wiring.
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Other Powertrain codes on this vehicle
29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
29E0
Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1