Engine Error
P0371
Timing Reference High Resolution Signal A Too Many Pulses
Severity
High
Symptoms
Engine surging, erratic tachometer, stalling
Common Causes
- Electrical interference from bad spark plug wires
- Faulty optical sensor
- Debris inside the distributor
- Failing alternator causing AC ripple
How to Fix
- 1 Reroute or replace spark plug wires
- 2 Replace optical sensor
- 3 Clean or rebuild distributor
- 4 Test alternator AC ripple
Estimated Repair Cost
USD
$50
–
$400
Plug wires: 50 - 150; Sensor/Distributor: 200 - 400