P0370moderate severityPowertrain
Timing Reference High Resolution Signal A Malfunction
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The PCM detected a malfunction in the high resolution timing reference signal A. This signal is critical for accurate ignition and injection timing.
Symptoms
- Check engine light on
- Poor engine performance
- Misfires or rough idle
Common causes
- Faulty timing reference sensor
- Wiring or connector fault
- Damaged reluctor/tone ring
- Faulty PCM
Diagnostic steps
- Retrieve trouble codes and freeze frame
- Inspect sensor wiring and connectors
- Check tone ring for damage
- Test sensor output and replace if needed
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1