Engine-Codes - Generic - P1351

P1351 Code - Ignition Control Module Circuit High Voltage

- Code Popularity: 42,941 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1351?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Ignition Control Module
  • Ignition Control Module harness is open or shorted
  • Ignition Control Module circuit poor electrical connection
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How to Fix the DTC P1351?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1351 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1351 Code Mean?

The Ignition Control Module (ICM) has independent power and ground circuits. The circuits between the ICM and the Powertrain Control Module (PCM) consists of the following circuits:
-The ignition control (IC) timing signal
-The IC timing control
-The low resolution engine speed signal
-The medium resolution engine signal
-The camshaft position signal
-The low reference
The ICM sends 3X signals to the PCM, and controls the timing advance during engine cranking. The timing advance changes to PCM control after the following actions occur:
The PCM receives the second 3X signal
The PCM applies 5 volts to the ignition control (IC) timing signal circuit.
The ICM monitors the CKP sync signal when the engine is cranking. The CKP sync signal is passed from the CKP sensor to the ICM on the CKP sensor 2 signal circuit. The CKP sync signal is used to determine the correct cylinder pair and initiate the ignition coil firing sequence. The 18X reference pulses are passed from the CKP sensor to the ICM on the CKP sensor 1 circuit. The 18X reference pulses are used for fuel injection and ignition control. After the ICM receives both signals, the ICM passes the 18X and 3X reference signals to the PCM. The CMP and the CKP sensors share a 12 volt reference and low reference circuit. The CKP sensor consists of the following circuits:
-A 12 volt reference
-A low reference
-A CKP sensor 1 signal
-A CKP sensor 2 signal
P1351 Code - Ignition Control Module Circuit High Voltage

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Code P1351 Information for Specific Makes

  • P1351 Audi Camshaft Position Sensor, Bank 1 Range/Performance Problem
  • P1351 BMW Misfire Cylinder 5 With Fuel Cut-Off
  • P1351 Buick Ignition Control Module Circuit High Voltage
  • P1351 Cadillac Ignition Control Module Circuit High Voltage
  • P1351 Chevrolet Ignition Control Module Circuit High Voltage
  • P1351 Dodge No Change in MAP From Start To Run
  • P1351 Ford Ignition Diagnostic Monitor Circuit Input Fault
  • P1351 GMC Ignition Control Module Circuit High Voltage
  • P1351 Hyundai #1 MF Signal Line Open
  • P1351 Isuzu Ignition Control Module Circuit High Voltage
  • P1351 Lexus Variable Valve Timing Sensor Range/Performance Problem Bank 2
  • P1351 MINI Misfire Cylinder 5 With Fuel Cut-Off
  • P1351 Toyota Variable Valve Timing Sensor Range/Performance Problem Bank 2
  • P1351 Volkswagen Camshaft Position Sensor, Bank 1 Range/Performance Problem

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