Code
P1013
DACIA
P — Powertrain
Engine control (EC) relay - circuit malfunction
AI status
Completed
Completed
100%
Causes
- Failed EC (engine control) relay
- Blown fuse for relay power circuit
- Damaged, corroded or loose relay connector
- Open/short in supply or control wiring to relay
- Poor or missing ground for relay or ECU
- Faulty ECU driver/transistor that controls the relay
Symptoms
- Malfunction Indicator Lamp (MIL) / check engine light illuminated
- Engine won’t start or intermittent no-start condition
- No prime of fuel pump (pump does not run) or loss of fuel/injection/ignition power
- Engine stalls unexpectedly or cuts out while running
- Electrical accessory power to engine control units missing or intermittent
What to check
- Read stored freeze frame and pending codes with OBD scanner, note when code sets (key on, cranking, driving)
- Visually inspect EC relay, fuse(s), relay socket and wiring for corrosion, heat damage or loose connections
- Check battery voltage and main power supply fuses/links (battery at rest and while cranking)
- With key ON, check for battery voltage at relay supply terminal and expected control signal at relay coil terminal
- Swap EC relay with a known-good identical relay (if available) to see if fault clears
- Back-probe ECU relay control pin to verify ECU driver is commanding relay (control should switch between ground and battery depending on design)
Signal parameters
- Relay supply voltage (battery feed): ~12.0–14.5 V with key ON/cranking
- Relay coil control: switches between battery voltage and ground (depending on design); when energized coil sees ≈12 V
- Typical relay coil resistance (generic): ~50–200 Ω (varies by relay)
- Closed contact resistance: very low, typically
- Relay coil current draw (generic): tens to a few hundred milliamps when energized
Diagnostic algorithm
- Read and record P1013 and any related codes; clear codes and attempt to reproduce. 2) Perform visual inspection of EC relay, fuse and connectors for corrosion/damage; repair or replace as needed. 3) Verify battery health and main fuses/links; replace any blown fuses. 4) With a DVOM, measure battery voltage at the relay supply terminal with key ON — should be near battery voltage. 5) Back-probe the relay coil control terminal; energize relay (key ON or crank) and confirm control voltage or ground command from the ECU. 6) If control command present but relay does not energize, substitute a known-good relay. 7) If relay energizes but ECU or downstream components lose power, check continuity of relay output feed and ground points to ECU and associated modules. 8) If relay and wiring are good but no control signal from ECU, suspect ECU driver fault — perform ECU power/ground checks and consult manufacturer service procedures before ECU replacement. 9) After repairs, clear codes and verify no recurrence under the same operating conditions.
Likely causes
- EC relay internally failed or contacts welded
- Corroded/loose relay socket connector or blown fuse
- Open or short in power feed to relay (battery side)
- ECU transistor/driver did not energize relay due to internal fault
Fault status
Status
The engine control relay circuit shows an abnormal condition — either the relay did not receive proper supply or control, or the circuit is open/short/intermittent. The ECM flagged the circuit as malfunctioning when expected relay operation was not observed.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1013
RAM
P — Powertrain
MPA Circuit Hi
AI status
Completed
Completed
100%
Causes
- Failed EC (engine control) relay
- Blown fuse for relay power circuit
- Damaged, corroded or loose relay connector
- Open/short in supply or control wiring to relay
- Poor or missing ground for relay or ECU
- Faulty ECU driver/transistor that controls the relay
Symptoms
- Malfunction Indicator Lamp (MIL) / check engine light illuminated
- Engine won’t start or intermittent no-start condition
- No prime of fuel pump (pump does not run) or loss of fuel/injection/ignition power
- Engine stalls unexpectedly or cuts out while running
- Electrical accessory power to engine control units missing or intermittent
What to check
- Read stored freeze frame and pending codes with OBD scanner, note when code sets (key on, cranking, driving)
- Visually inspect EC relay, fuse(s), relay socket and wiring for corrosion, heat damage or loose connections
- Check battery voltage and main power supply fuses/links (battery at rest and while cranking)
- With key ON, check for battery voltage at relay supply terminal and expected control signal at relay coil terminal
- Swap EC relay with a known-good identical relay (if available) to see if fault clears
- Back-probe ECU relay control pin to verify ECU driver is commanding relay (control should switch between ground and battery depending on design)
Signal parameters
- Relay supply voltage (battery feed): ~12.0–14.5 V with key ON/cranking
- Relay coil control: switches between battery voltage and ground (depending on design); when energized coil sees ≈12 V
- Typical relay coil resistance (generic): ~50–200 Ω (varies by relay)
- Closed contact resistance: very low, typically
- Relay coil current draw (generic): tens to a few hundred milliamps when energized
Diagnostic algorithm
- Read and record P1013 and any related codes; clear codes and attempt to reproduce. 2) Perform visual inspection of EC relay, fuse and connectors for corrosion/damage; repair or replace as needed. 3) Verify battery health and main fuses/links; replace any blown fuses. 4) With a DVOM, measure battery voltage at the relay supply terminal with key ON — should be near battery voltage. 5) Back-probe the relay coil control terminal; energize relay (key ON or crank) and confirm control voltage or ground command from the ECU. 6) If control command present but relay does not energize, substitute a known-good relay. 7) If relay energizes but ECU or downstream components lose power, check continuity of relay output feed and ground points to ECU and associated modules. 8) If relay and wiring are good but no control signal from ECU, suspect ECU driver fault — perform ECU power/ground checks and consult manufacturer service procedures before ECU replacement. 9) After repairs, clear codes and verify no recurrence under the same operating conditions.
Likely causes
- EC relay internally failed or contacts welded
- Corroded/loose relay socket connector or blown fuse
- Open or short in power feed to relay (battery side)
- ECU transistor/driver did not energize relay due to internal fault
Fault status
Status
The engine control relay circuit shows an abnormal condition — either the relay did not receive proper supply or control, or the circuit is open/short/intermittent. The ECM flagged the circuit as malfunctioning when expected relay operation was not observed.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P1013
RENAULT
P — Powertrain
- Engine control (EC) relay - circuit malfunction
AI status
Completed
Completed
100%
Causes
- Failed EC (engine control) relay
- Blown fuse for relay power circuit
- Damaged, corroded or loose relay connector
- Open/short in supply or control wiring to relay
- Poor or missing ground for relay or ECU
- Faulty ECU driver/transistor that controls the relay
Symptoms
- Malfunction Indicator Lamp (MIL) / check engine light illuminated
- Engine won’t start or intermittent no-start condition
- No prime of fuel pump (pump does not run) or loss of fuel/injection/ignition power
- Engine stalls unexpectedly or cuts out while running
- Electrical accessory power to engine control units missing or intermittent
What to check
- Read stored freeze frame and pending codes with OBD scanner, note when code sets (key on, cranking, driving)
- Visually inspect EC relay, fuse(s), relay socket and wiring for corrosion, heat damage or loose connections
- Check battery voltage and main power supply fuses/links (battery at rest and while cranking)
- With key ON, check for battery voltage at relay supply terminal and expected control signal at relay coil terminal
- Swap EC relay with a known-good identical relay (if available) to see if fault clears
- Back-probe ECU relay control pin to verify ECU driver is commanding relay (control should switch between ground and battery depending on design)
Signal parameters
- Relay supply voltage (battery feed): ~12.0–14.5 V with key ON/cranking
- Relay coil control: switches between battery voltage and ground (depending on design); when energized coil sees ≈12 V
- Typical relay coil resistance (generic): ~50–200 Ω (varies by relay)
- Closed contact resistance: very low, typically
- Relay coil current draw (generic): tens to a few hundred milliamps when energized
Diagnostic algorithm
- Read and record P1013 and any related codes; clear codes and attempt to reproduce. 2) Perform visual inspection of EC relay, fuse and connectors for corrosion/damage; repair or replace as needed. 3) Verify battery health and main fuses/links; replace any blown fuses. 4) With a DVOM, measure battery voltage at the relay supply terminal with key ON — should be near battery voltage. 5) Back-probe the relay coil control terminal; energize relay (key ON or crank) and confirm control voltage or ground command from the ECU. 6) If control command present but relay does not energize, substitute a known-good relay. 7) If relay energizes but ECU or downstream components lose power, check continuity of relay output feed and ground points to ECU and associated modules. 8) If relay and wiring are good but no control signal from ECU, suspect ECU driver fault — perform ECU power/ground checks and consult manufacturer service procedures before ECU replacement. 9) After repairs, clear codes and verify no recurrence under the same operating conditions.
Likely causes
- EC relay internally failed or contacts welded
- Corroded/loose relay socket connector or blown fuse
- Open or short in power feed to relay (battery side)
- ECU transistor/driver did not energize relay due to internal fault
Fault status
Status
The engine control relay circuit shows an abnormal condition — either the relay did not receive proper supply or control, or the circuit is open/short/intermittent. The ECM flagged the circuit as malfunctioning when expected relay operation was not observed.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
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👎 Dislike
0
Send to email