Fuel Injector Group Supply Voltage Low
The P216E code indicates that the powertrain control module (PCM) has detected a low voltage condition in the supply circuit for a group of fuel injectors. This can be caused by a faulty injector driver circuit, damaged wiring or connectors, a weak battery or charging system, or a failing PCM. Low voltage can prevent injectors from opening properly, leading to misfires, poor fuel economy, and potential engine damage.
1. Most Common Causes
- Faulty fuel injector driver circuit
- Damaged wiring or connectors in injector supply circuit
- Weak battery or charging system
- Failing PCM
2. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light on
- Poor fuel economy
- Hard starting or no start
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test battery voltage and charging system output.
Step 4: Use a multimeter to check voltage at the injector group supply circuit.
Step 5: Perform a voltage drop test on the injector power and ground circuits.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause engine misfires, poor performance, and potential damage to the catalytic converter.
How much does it cost to fix?▼
The cost to fix P216E typically ranges from $50 to $150 for diagnosis and repair, but can be higher if the PCM needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.